Question

the radius of a semicircle is 21 m . If one starts planting the trees at a distance of 6 m from point A to point B on the circular path as well as on diametrical path , how many trees will be planted​

Answer 1

Answer:

108

As the garden is in a semicircular shape, therefore,

Radius of garden =21m

As we know that,

Circumference of semicircle =πr

Whereas, r is the radius

Distance to walk all around the ground (d)=πr+2r

d=

7

22

×21+2×21

⇒d=66+42=108

Hence one has to walk 108m to walk all around the garden once.

Hence the correct answer is (B)108m