Respuesta :

a^2 + b^2 = c^2

4^2 + b^2 = 5^2

16 + b^2 = 25

b^2 = 9

b = 3 or b = -3

Since b is a leg of a triangle, we discard the negative answer.

b = 3

A = bh/2 = 3 in * 4 in / 2 = 6 in^2

Answer: D. 6 in^2