Question

What's the length of side b in the figure below?

Answer 1

Answer: Option 'D' is correct.

Explanation:

Since we have given that

There is a right angled triangle, in which,

Perpendicular = 7 cm

Hypotenuse = 13 cm

Base = b cm

As we know the formula for "Pythagorus theorem":

`H^2=B^2+P^2\\\\13^2=b^2+7^2\\\\169=b^2+49\\\\169-49=b^2\\\\b^2=120\\\\b=√(120)\ cm`

Hence, Option 'D' is correct.