Question

A square has side of (x+3) and an equilateral triangle has the sides of 2x. If the

perimeters are equal solve for x.​

Answer 1

x=6

Explanation:

Since a square's sides are all congruent, the perimeter for the square is:

(x+3)4= 4x+12 P of square= 4x+12

Since an equilateral triangle's sides are all congruent, the perimeter is:

2x(3)= 6x

Since it says the perimeters are equal,

6x=4x+12

2x=12

x=6