Question

Cora drew 2 regular triagles. each side of the first triamgle was 9 centimeters long. each side of the second triangle was 21 centimetrs long. in centimeters what was the difference between the perimeters of the two triangles

Answer 1

First triangle 9x3=27cm
Second triangle 21x3=63cm

Difference = 63-27=36cm

Hope this helps.