Question

anna wants to build a fence around her yard. If the rectangular yard is 28ft. By 21ft., how many feet long will the fence be?

Answer 1

98 ft

Explanation:

You want the perimeter of a rectangle with sides 28 ft and 21 ft.

Perimeter

The perimeter is the sum of the side lengths. A rectangle has opposite sides the same length, so we can write the perimeter formula as ...

P = 2(L +W)

P = 2(28 ft + 21 ft) = 2(49 ft)

P = 98 ft

Anna needs 98 ft of fence to build a fence around her yard.

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