Question

Find the length of the rectangle. The perimeter of the rectangle is 34 inches. The width of the rectangle is 7 inches. The length of the rectangle is L. A. 10 in. B. 20 in. C. 27 in. D. 70 in.

Answer 1

The correct answer is option A. 10 in

Explanation:

Points to remember

Perimeter of rectangle = 2(Length + width)

It is given that, Perimeter = 34 inches

Width = 7 inches

To find the length of rectangle

Perimeter = 2(Length + width)

34 = 2(Length + 7)

17 = Length + 7

Length = 17 - 7 = 10 inches

Therefore the length of rectangle = 10 inches

The correct answer is option A. 10 in

Answer 2

Hello!

The answer is:

The correct option is:

A. 10 in.

Why?

To calculate the length of the rectangle using its perimeter and one of its sides (width), we need to remember the formula to calculate the perimeter of a rectangle.

`Perimeter_(rectangle)=2width+2length`

Now, we are given the following information:

`Perimeter=34in\\Width=7in`

Then, substituting and calculating, we have:

`Perimeter_(rectangle)=2width+2length`

`34in=2*7in+2length`

`34in-14in=2length\\\\2length=20in\\\\length=(20in)/(2)=10in`

Hence, we have that the length of the rectangle is equal to 10 inches.

So, the correct option is:

A. 10 in.

Have a nice day!