surface area for half a cylinder

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How do I calculate the area of half a cylinder? attached is a photo showing the question please answer and show work!! thanks Math question elp!

Guest May 4, 2014

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Best Answer

+130518

+8

The surface area of a cylinder is given by 2*pi*r*h

Using 3.14 for "pi,' we have 2*(3.14)*(3m)*(30m) = 565.2 m²

But we only want 1/2 of this........282.6m²

Looks like "a" is your answer.

CPhill May 4, 2014

1⁺⁰ Answers

+130518

+8

Best Answer

The surface area of a cylinder is given by 2*pi*r*h

Using 3.14 for "pi,' we have 2*(3.14)*(3m)*(30m) = 565.2 m²

But we only want 1/2 of this........282.6m²

Looks like "a" is your answer.

CPhill May 4, 2014

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