Question

The lengths of the legs of a right triangle are 9 cm and 40 cm.

What is the length of the hypotenuse?

A. 39 cm
B. 41 cm
C. 49 cm
D. 65 cm​

Answer 1

B

Explanation:

Use pythagorean theorem a² + b² = c², where a and b are legs, and c is hypotenuse.

9² + 40² = c²

√(9² + 40²) = c

√(81 + 1600) = c

√1681 = c

41 = c

So length of hypotenuse is 41 cm.

Answer 2

the answer is D. 65 cm