How much paper is needed to cover the lateral surface of a can of tomato juice if the can is 7 inches tall and has a diameter of 4 inches?

Respuesta :

The formula for the surface area of a sphere is 2πrh + 2πr^2. Just plug in the values, keeping in mind that diameter is given instead of radius, so we need to divide that value by 2.

2
π(2)(7) + 2π(4) = 28π + 8π = 36π

You would need 36
π in^2 of paper to cover the can.

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