Question

Q If length of each side of equilateral triangle is b+5 and it's perimeter is 18cm find value of be

Answer 1

Step-by-step explanation:

As we know that the sides of equilateral triangles are equal

Given,

Perimeter=18 cm

Then we have

3(b+5) =18 cm

3b+15 = 18

3b = 3

b = 1