Solve for area of a rectangle - Common Core: 7th Grade Math
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Calculate the area of the provided figure.
Calculate the area of the provided figure.
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:
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:
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Calculate the area of the provided figure.
Calculate the area of the provided figure.
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:
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:
Compare your answer with the correct one above
In rectangle ABCD, the perimeter is 48 and side BC measures 4. What is the area of rectangle ABCD?
In rectangle ABCD, the perimeter is 48 and side BC measures 4. What is the area of rectangle ABCD?
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.
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.
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What is the area of rectangle WXYZ?
What is the area of rectangle WXYZ?
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.
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.
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A rectangle's length is twice as long as its width. If the width of the rectangle is 4, what is its area?
A rectangle's length is twice as long as its width. If the width of the rectangle is 4, what is its area?
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.
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.
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A rectangle has sides of 2, 2, 7, and 7. What is the area of that rectangle?
A rectangle has sides of 2, 2, 7, and 7. What is the area of that rectangle?
The area of a triangle is Length * Width, and in a rectangle opposite sides are parallel and have the same length. So here you know that the widths are 2 and the lengths are 7. So multiply 7 * 2 to get your answer, which is 14.
The area of a triangle is Length * Width, and in a rectangle opposite sides are parallel and have the same length. So here you know that the widths are 2 and the lengths are 7. So multiply 7 * 2 to get your answer, which is 14.
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