Aflower bed has the shape of a rectangle 21 feet long and 9 feet wide. what is its area in square yards?

21 square yards

Step-by-step explanation:

Let's remember that the formula of the area of a rectangle is A = L*W, where L is the length and W the width.

In this case, L = 21 feet and W = 9 feet.

Therefore, A = 21 feet * 9 feet = 189 square feet

We need the answer in square yards. We know that 1 feet equals 1/3 yard (1 feet = 1/3 yard)

As we need square yards, we just square the equation above.

1^2 square feet = (1/3) ^2 square yards

1 square feet = 1/9 square yards

The area is 189 square feet, so we just multiply by 189 on both sides to do the conversion to square yards.

189 square feet = 189*1/9 square yards

189 square feet = 21 square yards

The area of the flower bed is 21 square yards

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step-by-step explanation: