20.25
each side is 4.5
4.5x4.5=20.25
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Area of square: 324 square inches Perimeter of square: 72 inches
If the area of the square is 324 square inches then its perimeter is 4*18 = 72 inches
The area of square is : 5184.0
The perimeter is 24cm ******************************** First divide the perimeter by 4, then times the answer by 2, to get the area. Thus: (36 / 4 = 9) x 2 = 18 cm2
17. A 4x4 rectangle has a perimeter of 16 units and an area of 16 square units. A 3x6 rectangle has a perimeter of 18 units and an area of 18 square units. The number 17 is halfway between 16 and 18.