# algebra

posted by .

Find the length of one base of a trapezoid if the area is 126 inches squared, the height is 7 inches and the length of the other base is 15 inches.

• algebra -

Just plug in what you know:

If the two bases are a and b, and the height is h,

area = h(a+b)/2

126 = 7(a+15)/2

I trust you can figure out a's value from here.

## Similar Questions

1. ### Geometry

A trapezoid has an area of 128in2(inches squared), height of 32in, and one base is 5 inches. What is the length of the other base?
2. ### algebra 1

The area of trapezoid is h( b1+b2)/5, where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the lenghth, …
3. ### math

The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the length, …
4. ### math

The area of trapezoid is h( b1+b2)/5,where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the length, …
5. ### Math

The area of trapezoid is h( b1+b2)/5, where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the lenghth, …
6. ### geometry

the area of a trapezoid is 108 square inches and one of its bases has a length of 8 inches. If the height of the trapezoid is 1.5 feet,f ind the length of the other base in inches.
7. ### Geometry

The length of one base of a trapezoid is 19 inches and the length of the median is 16 inches. Find the length of the other base.
8. ### math

A trapezoid has an area of 96 square inches. It has a night of 12 inches and one of its bases is 6 inches. Determine the length of its other base
9. ### Geometry

The height of a trapezoid is 2 inches. If one base is 14 inches long and the area is 49 inches squared find the length of the other base. I know the Area of a trapezoid is A=1/2(b1+b2)h but Idk how to apply it when working backwards
10. ### Geometry

1.What is the perimeter of a rectangle with width 10 inches in length 13 inches?

More Similar Questions