A rectangle is 15 feel wide by 20 feet long. How long is its diagonal?

Question

A. 22 ft
B. 24 ft 
C. 25 ft
D. 35 ft

Answer

This is solved using the Pythagorean Theorem:

A*A + B*B = C*C 
                
 Note - * is a times sign here

A is the length, B is the width, and C is the length of the diagonal.

Solved, it is C = sqrt(A*A + B*B) = sqrt(15*15 + 20*20) = 25

The answer is C, ironically.

Answer

Should be c. 25ft, I think... Diag length = square root ( 15ft square + 20ft square )

A rectangle is 15 feel wide by 20 feet long. How long is its diagonal?

Answers (2)