Question 59
The perimeter of a rectangle is twice the perimeter of a square of side 18 units. If the breadth of the rectangle is 45, what is its area?
Solution
Perimeter of square = 4a
given , a= 18 , perimeter => 4*18 = 72
perimeter of rectangle => 2( L+B)
given , B= 45 units and perimeter of a rectangle is twice the perimeter of a square
therefore, 2(45+L)=2(72)
45+ L = 72
L= 27
Area of rectangle will be L*B = 27*45 = 1215 UNITS
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