Question

(SAT Prep) What is the sum of lengths of the two diagonals in a rectangle 5 by 12?

Answer 1

= 12+ 12 + 5 + 5
= 144 + 25
= 169

169/ 13

= 13 + 13
= 26

Answer 2

Explanation:

To find the length of the diagonal, use Pythagorean theorem.

(diagonal)² = (length)² +(width)²

= 12² + 5²

= 144+ 25

= 169

diagonal = √ 169 = 13 units

Sum of lengths of two diagonals = 13 + 13 = 26 units

In rectangle, diagonals are of equal length.