Answered

The area of a square piece of cardboard is 81 square inches. What is the length of the cardboard?

A8 inches
B9 inches
C20.25 inches
D10 inches

Verified Answer :

Luv2Teach

Answer:

Step-by-step explanation:

The area of a square is found in the formula

\(A=s^2\)

We have the Area value so we will plug it in:

\(81=s^2\)

Take the square root of both sides to undo the square on the s to get that

s = 9

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