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Question

The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. The perimeter of this garden is


  1. 62m

  2. 45 m

  3. 48 m

  4. 60 m


Solution

The correct option is C

48 m


The perimeter of the garden will be equal to the circumference of the complete circle (two semi-circular parts) plus twice the length of the rectangular part.

Length =20(72)+(72)=(207) m=13 m

Circumference of circle =2πr=2×227×72=22 m

Perimeter of the rectangular part =(13+13) m=26 m

So, perimeter of the shape =(22+26) m=48 m

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