Question

Please help!!

Which of the following shows the length of the third side, in inches, of the triangle below

Answer 1

40

Explanation:

Since the triangle is right, use Pythagoras' identity to solve for the third side

let the third side = x, then

9² + x² = 41²

81 + x² = 1681 ( subtract 81 from both sides )

x² = 1600 ( take the square root of both sides )

x =
`√(1600)` = 40

Answer 2

40

Explanation:

c=√a2+b2=√92+412≈41.97618