Question

A pyramid has a height of 5 in. and a surface area of 90 in^2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary.

360 in^2
180 in^2
22.5 in^2
3.6 in^2

Answer 1

See Damon's answer.

http://www.jiskha.com/display.cgi?id=1362360405

Answer 2

Um, I did, actually the right answer was 180 in.^2