Question

A rectangle with diagonals of length 11 and a pair of opposite sides of length 7, what is the area?

Answer 1

http://tiny.cc/yuy1b

Answer 2

use the pathagorean theorem on the diagonals and lengths. The answer is (11)^2 -(7)^2. Find that, square root the number. Then multiply by 7 and u get ur answer

Answer 3

thank you very much! :)
does that method work with all polygons for finding the area?

Answer 4

no.

Answer 5

this is a sorta, special math problem thingy.... it needs to be a rectangle. and you need to know the diagonals and a side. Learn the pythagorean thm.