Question

The circumference of a circular pond measures 22m.The diameter of this pond measures 7m.How many times is the circumference greater than the diameter?

Answer 1

Answer:

(i) Area of the path =π(R

2

−r

2

)

Here,

R=

2

28

+7=14+7=21 m

r=21−7=14 m

Area of the path =π(21

2

−14

2

)

=

7

22

×245

=770 m

2

(ii) Area of circular path =π(R

2

−r

2

)

Here,

R=20+2=22

r=22−2=20 m

Area of circular path =π(22

2

−20

2

)

=

7

22

×84

=264 m

2

Answer 2

Answer:

how to do it

the formula that is all lam asking