Question

Simplify the expression:
$\sqrt{169}+\sqrt{{12}^2+9^2}+\sqrt{289}$

• A. 40
• B. $\sqrt{683}$
• C. 45
• D. 55

Answer 1

The correct option is C 45

Square root of 169 = 13
Square root of $({12}^2+9^2)$ =$\sqrt{{12}^2+9^2}=\sqrt{144+81}=\sqrt{225}=15$
Square root of 289 = 17

Therefore, 13 + 15 + 17 = 45.