A contractor is planning a job that will require a large amount of gravel and sand. The estimates for the necessary gravel and sand are: Coarse gravel Fine gravel Sand 20,000 yd³ 29,000 yd³ 20,000 yd³ There are two pits from which material can be obtained, and the plan is to haul from these two pits and to separate (screen) on the job whatever material is needed. Analysis shows that the material at each pit has the following composition: Pit A Pit B Coarse gravel Fine gravel Sand Waste 20% 14% 25% 41% 30% 50% 20% 0%

A contractor is planning a job that will require a large amount of gravel and sand. The estimates for the necessary gravel and sand are: Coarse gravel Fine gravel Sand 20,000 yd³ 29,000 yd³ 20,000 yd³ There are two pits from which material can be obtained, and the plan is to haul from these two pits and to separate (screen) on the job whatever material is needed. Analysis shows that the material at each pit has the following composition: Pit A Pit B Coarse gravel Fine gravel Sand Waste 20% 14% 25% 41% 30% 50% 20% 0%

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter9: Surfaces And Solids

Section9.4: Polyhedrons And Spheres

Problem 23E: The surface of a soccer ball is composed of 12 regular pentagons and 20 regular hexagons. With each...

See similar textbooks

Similar questions

The tin can shown at the right has the indicated dimensions. Estimate the number of square inches of tin required for its construction. HINT: Include the lid and the base in the result.
A storage shed is in the shape of a trapezoidal prism. Each trapezoid represents one of its bases. With dimensions as shown, what is the storage capacity volume of its interior?
A rectangular solid has length L=12.6 mm, width W=23.8 mm, and height H=32.5 mm. Find the length of a diagonal AB from the upper left rear vertex to the lower right front vertex. Round the answer to 1 decimal place.
The surface of a soccer ball is composed of 12 regular pentagons and 20 regular hexagons. With each side of each regular polygon measuring 4.5 cm, the area of each regular pentagon is 34.9 cm2 and area of each regular hexagon is 52.5 cm2. a What is the surface area of the soccer ball? b If the material used to construct the ball costs 0.8 of a cent per square centimeter, what is the cost of the materials used in construction?
The gasoline tank on an automobile is box-shaped with dimensions of 24 in. by 20 in. by 9 in. If 1 ft3 corresponds to 7.5 gal of gasoline, What is the capacity of the automobiles fuel tank in gallons?
Determine the maximum and minimum permissible wall thickness of the steel sleeve shown in Figure 29-15.All dimensions are in millimeters.
a For the through in the shape of half-cylinder, find the volume of water it will hold Use 3.14 and disregard the thickness b If the trough is to be painted inside and out, find the number of square feet to be painted Use 3.14.
The farmer in Exercise 33 has decided to take the fencing purchased and use it to enclose the subdivided plots shown. aWhat are the overall dimensions of the rectangular enclosure shown? bWhat is the total area of the enclosure shown?
A cylinder is designed to hold one quart of liquid (or 58 cubic inches). What should the dimensions of the cylinder be in order to minimize the amount of material necessary to construct it?
Your task is to design a swimming pool that will hold a total of 1000 cubic meters of water. You may choose one of thepools below. Prepare a proposal to meet the following condition:
4. A manufacturer wants to produce cylindrical cans of two sizes: one with a content of 0.5 liter and another with a content of 0.25 liter. He will produce 1000 units of the first size and 2000 of the second size. Both these types of cans must have the same radius. If the least amount of material is to be used, what radius and height will both sizes of cans have?
10) A local aquarium has 2 fish tanks. Fish tank #1 has dimensions of 5ft x 5ft x 10ft. Fish tank #2 has dimensions of 10ft x 10ft x 15ft. If you compare the volumes, how many times larger is the volume of Fish Tank #2? PEARSON edu Te aer 24 % 6.