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ctetf14p1 q31

0. The perimeter of a square is 20 cm. A rectangle has the same width as the square. The length of the rectangle is double its width. The area, (in sq cm) of the rectangle is

  • Option : B
  • Explanation : Perimeter of square = 20 cm
    ∴ 4 × Side = 20
    Side = 20/4 = 5 cm
    Now, Side of square = Width of rectangle
    = 5 cm
    and Length of rectangle = 2 × Width
    = 2 × 5 = 10 cm
    Now, Area of rectangle = Length × Breadth
    = 10 × 5 = 50 cm2
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