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Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can write that as A (r) = 2 mr² + 8 tr. What is the domain of A (r)? In other words, for which values of r is A (r) defined? Part b: Continue to assume that the height of your cylinder is 4 inches. Write the radius r as a function of A. This is the inverse function to A (r), i.e to turn A as a function of r into. r as a function of A. r(A) = Hints: • To calculate an inverse function, you need to solve for r. Here you would start with A = 2 ar2 + 8 r. This equation is the same as 2 rr2 + 8 ar – A = 0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula. • If you want to type in 3+1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is x+1 more information in the Introduction to Mobius unit. Part c: If the surface area is 100 square inches, then what is the rardius r? In other words, evaluate r (100). Round your answer to 2 decimal places. Hint: To compute a numeric square root such as v17.3, you could • Use a spreadsheet such as Microsoft Excel or OpenOffice Cale and type in =sqrt(17.3) • Use a browser to connect to the Internet and type in sqrt(17.3) into a search field • Use a calculator The radius is Number inches if the surface area is 100 square inches.

Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can write that as A (r) = 2 mr² + 8 tr. What is the domain of A (r)? In other words, for which values of r is A (r) defined? Part b: Continue to assume that the height of your cylinder is 4 inches. Write the radius r as a function of A. This is the inverse function to A (r), i.e to turn A as a function of r into. r as a function of A. r(A) = Hints: • To calculate an inverse function, you need to solve for r. Here you would start with A = 2 ar2 + 8 r. This equation is the same as 2 rr2 + 8 ar – A = 0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula. • If you want to type in 3+1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is x+1 more information in the Introduction to Mobius unit. Part c: If the surface area is 100 square inches, then what is the rardius r? In other words, evaluate r (100). Round your answer to 2 decimal places. Hint: To compute a numeric square root such as v17.3, you could • Use a spreadsheet such as Microsoft Excel or OpenOffice Cale and type in =sqrt(17.3) • Use a browser to connect to the Internet and type in sqrt(17.3) into a search field • Use a calculator The radius is Number inches if the surface area is 100 square inches.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Home B Homepage - Southern New X m Southern New Hampshire U X C Module Two Discussion Qu X 2-3 project 1 topic explorat X X Mathway | Precalculus Prob x + chegg.com/homework-help/questions-and-answers/module-two-discussion-question-solve-problem--initial-post-brightspace-copy-description-cy-q66249472 M Update : Apps M Gmail Mail - Eddy, Matth... b My Questions | ba... E Home - » Students m Southern New Ha... E Reading List Module Two Discussion Question: Solve the problem below. For your initial post in Brightspace, copy the description of your cylinder in the box below and then enter your solution to all three parts (parts a, b, and c) of the problem. To copy the description of your cylinder, highlighting and using "copy" from here in Mobius and then using "paste" into Brightspace should work. Hint: This is similar to Question 63 in Section 5.7 of our textbook. We covered this section in "1- 4 Reading and Participation Activities: Inverses and Radical Functions" in Module One. You can check some of your answers to parts b and c to make sure that you are on the right track. The height of the cylinder is 4 inches. We'll be analyzing the surface area of a round cylinder - in other words the amount of material needed to "make a can". A cylinder (round can) has a circular base and a circular top with vertical sides in between. Let r be the radius of the top of the can and let h be the height. The surface area of the cylinder, A, is A = 2ar2 + 2nrh (it's two circles for the top and bottom plus a rolled up rectangle for the side). radius Areas = T r2 h = height Area = h(2tr) Circumference 2ar Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can .2
Transcribed Image Text:Home B Homepage - Southern New X m Southern New Hampshire U X C Module Two Discussion Qu X 2-3 project 1 topic explorat X X Mathway | Precalculus Prob x + chegg.com/homework-help/questions-and-answers/module-two-discussion-question-solve-problem--initial-post-brightspace-copy-description-cy-q66249472 M Update : Apps M Gmail Mail - Eddy, Matth... b My Questions | ba... E Home - » Students m Southern New Ha... E Reading List Module Two Discussion Question: Solve the problem below. For your initial post in Brightspace, copy the description of your cylinder in the box below and then enter your solution to all three parts (parts a, b, and c) of the problem. To copy the description of your cylinder, highlighting and using "copy" from here in Mobius and then using "paste" into Brightspace should work. Hint: This is similar to Question 63 in Section 5.7 of our textbook. We covered this section in "1- 4 Reading and Participation Activities: Inverses and Radical Functions" in Module One. You can check some of your answers to parts b and c to make sure that you are on the right track. The height of the cylinder is 4 inches. We'll be analyzing the surface area of a round cylinder - in other words the amount of material needed to "make a can". A cylinder (round can) has a circular base and a circular top with vertical sides in between. Let r be the radius of the top of the can and let h be the height. The surface area of the cylinder, A, is A = 2ar2 + 2nrh (it's two circles for the top and bottom plus a rolled up rectangle for the side). radius Areas = T r2 h = height Area = h(2tr) Circumference 2ar Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can .2
Home B Homepage - Southern New X m Southern New Hampshire U X C Module Two Discussion Qu X 2-3 project 1 topic explorat X X Mathway | Precalculus Prob x + chegg.com/homework-help/questions-and-answers/module-two-discussion-question-solve-problem--initial-post-brightspace-copy-description-cy-q66249472 M Update : Apps M Gmail Mail - Eddy, Matth... b My Questions | ba... E Home - » Students m Southern New Ha... E Reading List Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can write that as A (r) = 2 rr² + 8 ar. What is the domain of A (r)? In other words, for which values of r is A (r) defined? Part b: Continue to assume that the height of your cylinder is 4 inches. Write the radius r as a function of A. This is the inverse function to A (r), i.e to turn A as a function of r into. r as a function of A. r(A) = Hints: • To calculate an inverse function, you need to solve for r. Here you would start with A = 2 Tr2 + 8 r. This equation is the same as 2 Tr² + 8 r – A = 0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula. If you want to type in 3*1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is x+1 more information in the Introduction to Mobius unit. Part c: If the surface area is 100 square inches, then what is the rardius r? In other words, evaluate r(100). Round your answer to 2 decimal places. Hint: To compute a numeric square root such as v17.3, you could • Use a spreadsheet such as Microsoft Excel or OpenOffice Calc and type in =sqrt(17.3) • Use a browser to connect to the Internet and type in sqrt(17.3) into a search field • Use a calculator The radius is Number inches if the surface area is 100 square inches.
Transcribed Image Text:Home B Homepage - Southern New X m Southern New Hampshire U X C Module Two Discussion Qu X 2-3 project 1 topic explorat X X Mathway | Precalculus Prob x + chegg.com/homework-help/questions-and-answers/module-two-discussion-question-solve-problem--initial-post-brightspace-copy-description-cy-q66249472 M Update : Apps M Gmail Mail - Eddy, Matth... b My Questions | ba... E Home - » Students m Southern New Ha... E Reading List Part a: Assume that the height of your cylinder is 4 inches. Consider A as a function of r, so we can write that as A (r) = 2 rr² + 8 ar. What is the domain of A (r)? In other words, for which values of r is A (r) defined? Part b: Continue to assume that the height of your cylinder is 4 inches. Write the radius r as a function of A. This is the inverse function to A (r), i.e to turn A as a function of r into. r as a function of A. r(A) = Hints: • To calculate an inverse function, you need to solve for r. Here you would start with A = 2 Tr2 + 8 r. This equation is the same as 2 Tr² + 8 r – A = 0 which is a quadratic equation in the variable r, and you can solve that using the quadratic formula. If you want to type in 3*1 in Mobius, in text mode you can type in (3*pi+1)/(x+1). There is x+1 more information in the Introduction to Mobius unit. Part c: If the surface area is 100 square inches, then what is the rardius r? In other words, evaluate r(100). Round your answer to 2 decimal places. Hint: To compute a numeric square root such as v17.3, you could • Use a spreadsheet such as Microsoft Excel or OpenOffice Calc and type in =sqrt(17.3) • Use a browser to connect to the Internet and type in sqrt(17.3) into a search field • Use a calculator The radius is Number inches if the surface area is 100 square inches.
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