Question

Find an integer, x, such that 2, 4, and x represent the lengths of the sides of an acute triangle.


A.2
B.3
C.4
D.6

Answer 1

C) 4

Answer 2

Because
If x = 3 ----> 2^2 + 3^2 = 13 < 4^2 ----> obtuse triangle
If x = 4 ----> 2^2 + 4^2 = 20 > 4^2 ----> acute triangle
If x = 5 ----> 2^2 + 4^2 = 20 < 5^2 ----> obtuse triangle

Answer 3

Thanks so much, I gave you a best response. (: