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If a square has a perimeter of 28 inches, what is its area in square inches?

User RaidenF
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1 Answer

6 votes

Remember that

The formula to calculate the perimeter of a square is


P=4*b

where

b is the length side of the square

we have

P=28 in

substitute in the formula


\begin{gathered} 28=4*b \\ sol\text{ve for b} \\ b=(28)/(4)=7\text{ in} \end{gathered}

The area of a square is


A=b^2

substitute the value of b


\begin{gathered} A=7^2 \\ A=49\text{ in}^2 \end{gathered}

The area is 49 square inches

option C

User Fergmux
by
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