Question

A rectangle that has an area of 357 square inches is 17 inches wide. Using the formula for area (4072-01-01-03-00_files/i0260000.jpg), how long is the rectangle? a. 21 inches b. 340 inches c. 20 inches d. 15 inches

Answer 1

A = L * W
A = 357
W = 17

357 = 17L
357 / 17 = L
21 = L <== length is 21 inches

Answer 2

The correct option is: a. 21 inches

Explanation:

The area of the rectangle is 357 square inches and width is 17 inches.

Formula for the area of rectangle is:
`Area= Length* Width`

Suppose, the length of the rectangle
`=x` inches.

So, the equation will be.....

`357=x* 17\\ \\ (357)/(17)=(x* 17)/(17)\ [Dividing\ both\ sides\ by\ 17]\\ \\ 21=x`

So, the rectangle is 21 inches long.