1 Introduction To Common Fractions And Mixed Numbers 2 Addition Of Common Fractions And Mixed Numbers 3 Subtraction Of Common Fractions And Mixed Numbers 4 Multiplication Of Common Fractions And Mixed Numbers 5 Division Of Common Fractions And Mixed Numbers 6 Combined Operations Of Common Fractions And Mixed Numbers 7 Computing With A Calculator 8 Computing With A Spreadsheet 9 Introduction To Decimal Fractions 10 Rounding Decimal Fractions And Equivalent Decimal And Common Fractions 11 Addition And Subtraction Of Decimal Fractions 12 Multiplication Of Decimal Fractions 13 Division Of Decimal Fractions 14 Powers 15 Roots 16 Table Of Decimal Equivalents And Combined Operations Of Decimal Fractions 17 Computing With A Calculator 18 Computing With A Spreadsheet 19 Achievement Review—section One 20 Ratio And Propor Tion 21 Direct And Inverse Proportions 22 Introduction To Percents 23 Basic Calculations Of Percentages, Percents, And Rates 24 Percent Practical Applications 25 Achievement Review—section Two 26 Customary (english) Units Of Measure 27 Metric Units Of Linear Measure 28 Degree Of Precision, Greatest Possible Error, Absolute Error, And Relative Error 29 Tolerance, Clearance, And Interference 30 Customary And Metric Steel Rules 31 Customary Vernier Calipers And Height Gages 32 Metric Vernier Calipers And Height Gages 33 Digital Calipers And Height Gages 34 Customary Micrometers 35 Metric Vernier Micrometers 36 Digital Micrometers 37 Customary And Metric Gage Blocks 38 Achievement Review—section Three 39 Symbolism And Algebraic Expressions 40 Signed Numbers 41 Algebraic Operations Of Addition, Subtraction, And Multiplication 42 Algebraic Operations Of Division, Powers, And Roots 43 Introduction To Equations 44 Solution Of Equations By The Subtraction, Addition, And Division Principles Of Equality 45 Solution Of Equations By The Multiplication, Root, And Power Principles Of Equality 46 Solution Of Equations Consisting Of Combined Operations And Rearrangement Of Formulas 47 Applications Of Formulas To Cutting Speed, Revolutions Per Minute, And Cutting Time 48 Applications Of Formulas To Spur Gears 49 Achievement Review—section Four 50 Lines And Angular Measure 51 Protractors—simple Semicircular And Vernier 52 Types Of Angles And Angular Geometric Principles 53 Introduction To Triangles 54 Geometric Principles For Triangles And Other Common Polygons 55 Introduction To Circles 56 Arcs And Angles Of Circles, Tangent Circles 57 Fundamental Geometric Constructions 58 Achievement Review—section Five 59 Areas Of Rectangles, Parallelograms, And Trapezoids 60 Areas Of Triangles 61 Areas Of Circles, Sectors, And Segments 62 Volumes Of Prisms And Cylinders 63 Volumes Of Pyramids And Cones 64 Volumes Of Spheres And Composite Solid Figures 65 Achievement Review—section Six 66 Introduction To Trigonometric Functions 67 Analysis Of Trigonometric Functions 68 Basic Calculations Of Angles And Sides Of Right Triangles 69 Simple Practical Machine Applications 70 Complex Practical Machine Applications 71 The Cartesian Coordinate System 72 Oblique Triangles 73 Achievement Review—section Seven 74 Introduction To Compound Angles 75 Drilling And Boring Compound-angular Holes 76 Drilling And Boring Compound-angular Holes 77 Machining Compound-angular Surfaces 78 Computing Angles Made By The Intersection Of Two Angular Surfaces 79 Computing Compound Angles On Cutting And Forming Tools 80 Achievement Review—section Eight 81 Introduction To Computer Numerical Control (cnc) 82 Control Systems, Absolute Positioning, Incremental Positioning 83 Location Of Points 84 Binary Numeration System 85 Hexadecimal Numeration System 86 Bcd (binary Coded Decimal) Numeration Systems 87 An Introduction To G- And M-codes For Cnc Programming 88 Achievement Review—section Nine Chapter61: Areas Of Circles, Sectors, And Segments
Chapter Questions Section: Chapter Questions
Problem 1A: Plans call for triangle BCDto be sheared off a corner of a rectangle as shown in the figure. A... Problem 2A: Find the area of the shaded portion of this figure. Round your answer to 2 decimal places. Problem 3A: Four circles are equally spaced on a bolt circle 3.5 in. in diameter. Use construction techniques to... Problem 4A: What is the radius of a circle with a circumference of 27.36 cm. Round the answer to 2 decimal... Problem 5A: What is the supplement of a 17548'29" angle? Problem 6A Problem 7A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 8A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 9A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 10A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 11A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 12A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 13A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 14A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 15A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 16A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 17A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 18A: Find the unknown area, or diameter for each of the circles 7 through 18. Where necessary, round the... Problem 19A: A rectangular steel plate 15.10 inches long and 12.45 inches wide weighs 19.4 pounds. Find the... Problem 20A: Hydraulic pressure of 705.0 pounds per square inch is exerted on a 3.150-inch diameter piston. Find... Problem 21A: A circular base is shown. The base is cut from a steel plate that weighs 34 kilograms per square... Problem 22A: Find the area of the template shown. Round the answer to the nearest tenth inch. All dimensions are... Problem 23A: A force of 62,125 pounds pulls on a steel rod that has a diameter of 1800 inches. Find the force... Problem 24A: A piece shown by the shaded portion is to be cut from a square plate 128 millimeters on a side. a.... Problem 25A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 26A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 27A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 28A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 29A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 30A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 31A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 32A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 33A Problem 34A Problem 35A Problem 36A: Find the unknown area, radius, or central angle for each of these sectors 25 through 36. Where... Problem 37A: A section of a piece of round stock with a V-groove cut is shown. Find the sectional area of the... Problem 38A: Three pieces, each in the shape of a sector, are cut from the rectangular sheet of steel shown. How... Problem 39A Problem 40A Problem 41A: Find the area of each of the segments ACE for Exercises 41 through 45. Problem 42A Problem 43A Problem 44A Problem 45A Problem 46A Problem 47A: Compute the area of the steel insert (shaded segment) shown. Round the answer to 1 decimal place. Problem 48A: A pattern is shown. a. Find the surface area of the pattern. Round the answer to the nearest square... Problem 49A: The shaded piece shown is cut from a circular disk. Find the area of the piece. Round the answer to... Problem 50A Problem 38A: Three pieces, each in the shape of a sector, are cut from the rectangular sheet of steel shown. How...
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Maths GCSE Triangle word problem
Transcribed Image Text: The diagram shows triangle ABC with D on AC and E on AB.
DE is a straight line.
28m
Not to scale
41m
22 m
64 m
AD = 28 m, AE = 41 m. DE = 22m and BC = 64 m.
Calculate the length CD.
(Total for Question 8 is 6
Polygon with three sides, three angles, and three vertices. Based on the properties of each side, the types of triangles are scalene (triangle with three three different lengths and three different angles), isosceles (angle with two equal sides and two equal angles), and equilateral (three equal sides and three angles of 60°). The types of angles are acute (less than 90°); obtuse (greater than 90°); and right (90°).
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