A square with a side length of 9 meters has an area of 81 square meters.
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The area of square is : 81.0
ratio of areas = (ratio of sides)² ratio of sides = 3 : 5 → ratio of areas = 3³ : 5² = 9 : 25 → area larger = 81 m² ÷ 9 × 25 = 225 m²
Assuming it is a square with SIDES of length 2.35 meteres (rather than diagonals, for example), its area is 2.35*2.35 = 5.5225 sq metres.
A square has 4 sides. Multiply the number of sides by their lenghts. 4 * 7 m = 28 m Therefore, the perimeter of a square room with 7 meter sides is 28 meters.
A square with an area of 400m has a side length of 20m. The perimeter of a square of four times the length of one of its sides. Four times 20m is 80m. Therefore, the perimeter is 80m.