Abdul's company makes solid balls out of scrap metal for various industrial uses. For one project, he must make copper balls that have a radius of 6in. If copper costs $0.75 per in3, how much will the copper cost to make one ball?Use 3.14 for π, and do not round your answer.

Jessica's company makes solid metal balls for various industrial uses. A customer wants aluminum balls that have a diameter of 6in. If Jessica must make 70 of these balls, how much aluminum will she need?

If a copper wire of diameter 1.5 cm and length 80 m is melted completely and recast to form a solid spherical ball of radius R cm, then find the value of R (in cm).

A company is going to make a water tank in the shape of a cylinder. As shown below, the tank will have a height of 4ft and a radius of 7ft. The tank will be made from metal (including its top and bottom). Suppose the total cost of the metal will be $18,858.84. How much will the metal cost per square foot? Use 3.14 for π, and do not round your answer.

Larry manufactures circular garden ponds that are 1.4 feet deep and have a diameter of 12 feet. They are made out of synthetic rubber liners which she buys in rolls at a cost of $3.80 per square foot. What does the rubber cost Larry to manufacture each pond? (Use pi = 3.14 and round your final answer only.)

A soccer ball has a volume of 10770.86 cubic centimeters. What is the diameter of this soccer ball? Round your answer to the nearest tenth. Use the approximate value of π, which is 3.14.