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31 December, 18:09

The width, w, of a rectangle is equal to 3/7 of its length, l. The length, l, of the rectangle is 21 inches.

What is the perimeter of the rectangle?

What is the area of the rectangle, in square inches?

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  1. 31 December, 18:14
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    Because the width is 3/7 of 21, we can multiply 3/7 by 21 to find the width. 3/7 * 21 = 9. So, the width is 9.

    Now we know that the width is 9 and the length is 21. From this, we can find the perimeter and area of the rectangle. The perimeter is equal to 9 + 9 + 21 + 21 = 60. So, the perimeter is 60 inches.

    Now, we need to find the area. We do this by multiplying 21 * 9. This is equal to 189, so the area is 189 square inches.
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