Question:
area of a square is 81cmsquare find its side.[with method]
Answer:
Let length of side of a square = a
Given, area of the square = 81
=> a2 = 81
=> a = ±√81
=> a = ±9
Since length of side can not be negative,
So, a = 9
Hense, length of side of a square is 9 cm
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