Question

What’s the length of QR?

Question 6 options:

A)

1

B)

6.7

C)

5

D)

17.7

Answer 1

C

Explanation:

a^2 + b^2= c^2

a^2 + 12^2 =13^2

a^2= 13^2 - 12^2

a^2=25

√ to get a by itself

a=5

the answer is C