Question
Perimeter of a square is equal to perimeter of a
rectangle, if area of square is 441 sq.cm and length of rectangle is four times that of breath. Find the area of rectangle.Solution
a² = 441 cm. sq. a = 21 cm According to question, => 4 × 21 = 4 (2b + b) => 21 = 3b => b = 7 cm So, l = 7 x 4 = 28 cm Area of rectangle = (28 × 7) = 196 cm. sq.
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