Question

Use the Pythagorean theorem to find a whole number estimate of the length of the unknown side of the right triangle. ​The length of the unknown side of the triangle is approximately cm. ​

Answer 1

12 cm

Explanation:

Leg of one side = 5 cm

Hypotenuse = 13cm

According to the theorem,

A^2 + B^2 = C^2

5^2 + B^2 = 13^2

25 + B^2 = 169

Subtract 25 form both sides,

B^2 = 169 - 25

B^2 = 144

B = sqrt( 144 )

B = 12

Done!