Question

Helppp please - this is math

If the base of a triangle is 3cm, how long should the missing side of a triangle be to make an isosceles with a perimeter of 15 centimeters?

Answer 1

6 cm

Explanation:

let, missing side be x cm

then, x+x+3 = 15

=> 2x = 12

=> x = 6 cm

Thus, missing side is 6 cm long