Question

What is the value of the triangle ?

Answer 1

formula:
a^2 + b^2 = c^2

substitute the values:
4^2 + x^2 = 9^2

simplify:
16 + x^2 = 81

subtract 16 from both sides:
x^2 = 65

square root both sides:
x = √65

ANSWER IS C

Answer 2

X =
`√(65)`