Question

How long is one leg of a right triangle if the other leg is 9 feet long and the hypotenuse is 15 feet long?

• A. 169 Inches
• B. 13 Inches
• C. 17 Inches
• D. 7 Inches

Answer 1

The correct option is B 13 Inches

According to Pythagoras theorem, $h^2=a^2+b^2$
So, ${15}^2=a^2+9^2$
$a^2={15}^2-9^2$
$a^2=225-81$
$a^2=144$
a = 12
Therefore, one leg of the right triangle is 12 feet long.