Question

Write a formula for the given measure. Let A represent the area in square feet, and h represent the height in feet. Identify which variable depends on which in the formula. the area of a trapezoid with base lengths of 7 feet and 11 feet A=

Answer 1

A= 9h

Explanation:

Here the question asks to write a formula for a given measure.

A represents the area in square feet

H represent the height and the the lengths of the base were given as 11 and 7(b1 and b2)

Area of a trapezium is height multiplied by sum of the base lenghts divided by 2

Sum of base lenght here is 18(11+7)

Height wasn't given

So the answer here is

A= 1/2×(b1+b2)×h

A=1/2×18×h

A=9h

Answer 2

So, the area of a trapezoid is A=9h in square feet.

Explanation:

We know that a h represent the height in feet. We have that the base lengths of 7 feet and 11 feet. So,

`b_1=7\\\\b_2=11\\`

We calculate the area in square feet, where A represent the area.

We have the formula for the area of a trapezoid:

`\boxed{A=(b_1+b_2)/(2)\cdot h}`

Therefore, we get:

`A=(b_1+b_2)/(2)\cdot h\\\\A=(7+11)/(2)\cdot h\\\\A=9h`

So, the area of a trapezoid is A=9h in square feet.