The area of a triangle is 150 sq cm.
If the base is decreased by $\frac{1}{3}$ (becomes $\frac{2}{3}$ of the original) but the height is kept the same, what is the new area?

Question

The area of a triangle is 150 sq cm. If the base is decreased by 1/3 (becomes 2/3 of the original) but the height is kept the same, what is the new area?

Accepted Answer

100. Area is proportional to the base. New base is 2/3 of the original, so new area = 2/3 x 150 = 100 sq cm.

The area of a triangle is 150 sq cm.
If the base is decreased by $\frac{1}{3}$ (becomes $\frac{2}{3}$ of the original) but the height is kept the same, what is the new area?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Area of Triangles practice

The area of a triangle is 150 sq cm.If the base is decreased by 31​ (becomes 32​ of the original) but the height is kept the same, what is the new area?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Area of Triangles practice

The area of a triangle is 150 sq cm.
If the base is decreased by $\frac{1}{3}$ (becomes $\frac{2}{3}$ of the original) but the height is kept the same, what is the new area?