# Common Core: 7th Grade Math : Solve for area of a rectangle

## Example Questions

### Example Question #1 : Solve For Area Of A Rectangle

Calculate the area of the provided figure.

Explanation:

In order to solve this problem, we need to recall the area formula for a rectangle:

Now that we have the correct formula, we can substitute in our known values and solve:

### Example Question #2 : Solve For Area Of A Rectangle

Calculate the area of the provided figure.

Explanation:

In order to solve this problem, we need to recall the area formula for a rectangle:

Now that we have the correct formula, we can substitute in our known values and solve:

### Example Question #3 : Solve For Area Of A Rectangle

In rectangle ABCD, the perimeter is 48 and side BC measures 4. What is the area of rectangle ABCD?

64

88

72

48

80

80

Explanation:

The perimeter of a rectangle is 2L + 2W, or 2 times the length plus 2 times the width.  Here you're given that side BC is 4, which means that the opposite side, AD, is also 4.  So since that is two widths, you now have:

8 + 2L = 48

So 2L = 40

That means that the length is 20.

Since the area is LW, you can calculate the area as 20 * 4 = 80.

### Example Question #912 : Grade 7

What is the area of rectangle WXYZ?

150

120

50

125

100

150

Explanation:

The area of a triangle is Length times Width. Here you can see that the length is 15 and the width is 10, so when you multiply 15 * 10 the answer is 150.

### Example Question #913 : Grade 7

A rectangle's length is twice as long as its width. If the width of the rectangle is 4, what is its area?

32

8

24

16

12

32

Explanation:

The area of a rectangle is Length * Width. Here you're given the width as 4, so all you need to do is find the length and you can apply the formula.

Since the width is 4 and you know that the length is twice as long, that makes the length 8. Then Length * Width would be 8 * 4 = 32.

### Example Question #3 : Solve For Area Of A Rectangle

A rectangle has sides of 2, 2, 7, and 7. What is the area of that rectangle?

14

7.5

22

18

9