# Math

posted by .

If the base of an isosceles triangle is decreased by 40% and its height is increased by 10%, then what is the percent change in the area of the triangle?

• Math -

i think it is 5o%

• Math -

The percent change is a reduction to 66% of the original area, or a 34% reduction.

## Similar Questions

1. ### Math

The area A of a triangle is given by the formula A=1/2bh If the base of the triangle with height 12 inches is doubled, its area will be increased by 48 square inches. Find the base of the orignial triangle.
2. ### Math

An isosceles triangle and a rectangle share a base. The area of the rectangle is 4 times the area of the triangle. The area of the triangle is 60 cm^2 and its height is 15 cm. Find the dimensions of the triangle.
3. ### Algebra II

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
4. ### Math

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
5. ### Algebra II

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
6. ### Algebra II

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
7. ### Math

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
8. ### Math problem

The area of a triangle is equal to 1/2 the hight times the base. A triangle has a height of 10 and a base of 20. If the height of the triangle is increased by 10% and the base is decreased by 10%, then the area of the new triangle …
9. ### Calculus / Rates of Change

An isosceles triangle has a base that is 1.5 times the height. If the area is increasing at 9cm2/s, how fast is the height increasing when it is 12 cm high?
10. ### math

If the length of the base of a triangle is increased by 10 percent and the height is decreased by 20 percent, what is the percent change (increase or decrease) in the area of the triangle?

More Similar Questions