A thermal insulated sleeve is used to cover the lateral surface of a hot water heater to help improve efficiency. The hot water tank is a cylinder with a 13 inch radius and a 75 inch height. The sleeve is 3 inches thick. The insulating material that makes up the sleeve is a fiberglass composite. How many cubic inches of fiberglass composite are needed to create each sleeve?

v= in3

Step-by-step explanation:

step 1

Find the lateral surface of the cylinder (hot water tank)

The lateral area is given by the formula

we have

substitute

step 2

Find the volume of fiberglass composite needed

Multiply the lateral area by the thick

-----> exact value

assume

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step-by-step explanation:

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step-by-step explanation: