Question

△BCD ​ is a right triangle. The length of the hypotenuse is 20 centimeters. The length of one of the legs is 15 centimeters. What is the length of the other leg? Enter your answer, as a decimal rounded to the nearest tenth, in the box.

___CM

Answer 1

A squared+ B squared=C squared
A squared+ 15 squared= 20 squared
A squared + 225 = 400
400 - 225 = 175 = A squared
175 square root = A

= 13.2287565553 cm