Question

The triangle below is equilateral. Find the length of side x to the nearest tenth.
x
12

Answer 1

`x = 4√(3)`

Explanation:

`a^(2)+b^(2) =c^(2)`

`x^(2) + 12^(2) =c^(2)`

Equilateral --> c = 2x

`x^(2) +144 = (2x)^(2) \\x^(2) +144 = 4x^(2) \\3x^(2) =144\\x^(2) =48\\x=4√(3)`