Question

What is the area of the rectangle?
[1] ft2

Answer 1

a^2+b^2=c^2 (Pythagoran theorem)

-> 30^2 + length^2 = 78^2
-> length = √6084-900 = √5184 = 72 ft

=> area = length x width = 72 x 30 = 2160 ft^2