The area of the square is 144 cm2, which is the area of which the side is 3 cm smaller.
| January 17, 2021 | education
A square is a quadrangle in which all sides are equal and the corners are right.
Its area is determined by the formula: S = a², we find the unknown side, provided that the area is 144 cm²:
a = √144 = 12 cm.
For a square with a side 3 cm less: 12 – 3 = 9 cm:
S = 9² = 81 cm².
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