Question

Look at triangle STU:

A right triangle STU is shown with the right angle at T. The length of side ST is labeled as 42 cm, and the length of side TU is labeled as 56 cm.

What is the length (in centimeters) of side SU of the triangle?

70 centimeters
77 centimeters
90 centimeters
98 centimeters

Answer 1

70 cm

Explanation:

42^2 + 56^2 = c^2

1764 + 3136 = c^2

4900 = c^2

70 = c