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The area of a square is thrice the area of a rectangle If the area of the square is 225 sq cm and the length of the rectangle is 15 cm what…

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The area of a square is thrice the area of a rectangle If the area of the square is 225 sq cm and the length of the rectangle is 15 cm what is the difference between the breadth of the rectangle and the side of the square ?
  • A8 cm
  • B10 cm
  • C12 cm
  • D6 cm
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Solution
area of square = $(side)^2$ = 225
Side of square = 15 cm
It is given that area of square is thrice area of rectangle ,so
225 = 3 x L x B where L and B are length and breadth of rectangle.
Given that length of rectangle is 15 cm so B = 5 cm
Side of square - Breadth of rectangle = 15 -5 =10 cm