Question -
Answer -
Given: Total length = 20 m
Diameter of semi circle = 7 m
Radius of semi circle =┬а7/2 = 3.5 m
Length of rectangular field
= 20-(3.5+3.5) = 20-7 = 13 m
Breadth of the rectangular field = 7 m
Area of rectangular field =┬аl├Чb
= 13├Ч7= 91m2
Area of two semi circles =┬а2├Ч(1/2)├Ч╧А├Чr2
=┬а2├Ч(1/2)├Ч22/7├Ч3.5├Ч3.5
= 38.5 m2
Area of garden = 91+38.5 = 129.5 m2
Now Perimeter of two semi circles =┬а 2╧Аr = 2├Ч(22/7)├Ч3.5┬а= 22 m
And Perimeter of garden = 22+13+13
= 48 m. Answer