Question

Question 7 of 10 What is the length of BC in the right triangle below?

Answer 1

Answer:

A

Step-by-step explanation:

Answer 2

Answer:

A

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

BC² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )

BC = $\sqrt{225}$ = 15 → A