the diameter of a circular Park is 140 M around it on the outside A path having the width of 7 M is constructed if the path has to be fenced from inside and outside at the rate of 7 rupees per metre find its total cost
Answers
Answer:
Rs 6468
Step-by-step explanation:
we have to find the inside distance and outside distance.
for inside distance , radius = 140/2 =70 m
length of circumference =2π×radius
=2×(22/7)×70
=440 m
now, outside distance
radius = 70 +7 = 77 m
length of circumference = 2π× radius
= 2×(22/7)×77
= 484 m
total length = 440 +484 =924 m
cost = Rs 7× 924 = Rs 6468
(answer)
Answer:
Step-by-step explanation:
in case of the circular park whose diameter is 140m,
the circumference of park=2πr=2r x π
= 140 x 22/7 (2 x radius=diameter)
=440m
in case of the new circle or circular structure formed when a uniform path of width 7m is constructed around the park,
the diameter of the park including the path=140m + 7m + 7m=154m
the circumference of the park including the path=2πr=2r x π
=154 x 22/7
=484m
total length to be fenced=440m + 484m=924m
total cost of fencing=rs7 x 924= rs6468