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
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)=(20−7) 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