The side of a square with area 81 sq. cm is __________.
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The area of the square being 81 sq m, each side will be 81^0.5 = 9 m. The perimeter is thus 4 times the side = 4*9 = 36 m. The sides of the square are the square root of the area (81m^2), which is 9m.
Answered by
4
Answer:
9cm
Step-by-step explanation:
let side be x
- Area of square = x²
- 81 = x²
- square root of 81 = x
- 9 = x
- thus, side=9cm
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