Question

C=97 , b=72 , a= ?

a) 55
b)65
c)35
d)75

Answer 1

B) 65.
A^2 + B^2 = C^2 so C^2 - B^2 = A^2.
C^2 = 97^2 which is 9,409
B^2 = 72^2 which is 5,184
9,409 - 5,184 = 4,225
Square root of 4,225 is 65.

Answer 2

Using the Pythagorean Theorem the answer is 65. The explanations in the picture below.