A circular park is surrounded by a road 28m wide . Find the area of the road if circumference of the park is 880m
Answers
Answered by
1
27104 cm square is the right answer
Answered by
3
Circumference of circle= 880m
2πr=880
44/7×r=880
r=880×7/44
r=20×7=140m
Inner radius of circular park=r=140m
outer radius with road=R=140+28=168m
area of road=outer area-inner area
= πR^2-πr^2
=π(R^2-r^2)
=22/7(168^2-140^2)
=22/7(28224-19600)
=22/7×8624=22×1232=27104m^2
2πr=880
44/7×r=880
r=880×7/44
r=20×7=140m
Inner radius of circular park=r=140m
outer radius with road=R=140+28=168m
area of road=outer area-inner area
= πR^2-πr^2
=π(R^2-r^2)
=22/7(168^2-140^2)
=22/7(28224-19600)
=22/7×8624=22×1232=27104m^2
rohitrathee30:
If any problem tell me.
Similar questions