if the altitude of a triangle is doubled and the base is multiplied by 3 , what is the effect on the area?

Answer 1

First, 5th grade is not a subject.

Area = base * height. if the altitude is doubled and the base is multiplied by 3, then the new area is 3*base * 2*height.

What do you think the effect on the area is? It will be multiplied by some factor.