Question

I need help with this question please

Answer 1

Answer:

C. 9

Step-by-step explanation:

$area \: of \: square = {side}^{2} \\ \therefore \: {side}^{2} = 81 \\\therefore \: side = \sqrt{81} \\ \therefore \: side = 9 \: feet$

Hence, side length of square = 9 feet.

Answer 2

Answer:

9 ft

Step-by-step explanation:

Area = 81 ft²

Area of square = length x length

A square has all its sides equal

Therefore

Area = L²

L² = 81 ft²

Find square root of both sides

sq rt L² = sq rt  81 ft²

L = 9 ft

Therefore length of the square = 9 ft

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