find the area of a rectangle …
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Yogita Ingle 6 years, 10 months ago
Perimeter of square = side × side
81 = side × side
side = 9 cm
perimeter of square = 4 × 9 = 36 cm
But perimeter of square = perimeter of rectangle
2(6) + 2(x) = 36
12 + 2x = 36
2x = 36 -12
2x = 24
x = 12 cm
Area of rectangle = 12 × 6 = 72 sq. cm
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