Question

What is the length of the third side of the window frame ??

Answer 1

A^2+b^2=c^2
A=63
B=?
C=87
63^2+b^2=87^2
3969+b^2=7569
-3969 both sides
B^2=3600
Square root both sides
B=60in

Answer 2

87^2-63^2=3600
√3600=60
Answer is 60 in