Q.no.26- tbe diameter of a circular Park is 86 metre .on its outside there are 400 cm wide path running aroundIt. find the cost of turfing the path at rupees 7.5 per square . Also find the cost of fencing the park at11 per square metre. About the author Valentina
Answer :– → Radius of circular park = D/2 = 86/2 = 43 m . so, → Cost of fencing the park = Rate * circumference = 11 * 2 * 3.14 * 43 = Rs. 2970.44 (Ans.) now, → Area of path = π[(43 + 4)² – (43)²] = 3.14(47² – 43²) = 3.14 * 90 * 4 = 1130.4 m². then, → Cost of turfing the path = Rate * Area = 7.5 * 1130.4 = Rs.8478 (Ans.) Learn more :- Q.no.21, diameter of wheel is 130 cm how many revolutions will it make to cover a distance of 80 kilometre. https://brainly.in/question/38313970 Reply
Answer :–
→ Radius of circular park = D/2 = 86/2 = 43 m .
so,
→ Cost of fencing the park = Rate * circumference = 11 * 2 * 3.14 * 43 = Rs. 2970.44 (Ans.)
now,
→ Area of path = π[(43 + 4)² – (43)²] = 3.14(47² – 43²) = 3.14 * 90 * 4 = 1130.4 m².
then,
→ Cost of turfing the path = Rate * Area = 7.5 * 1130.4 = Rs.8478 (Ans.)
Learn more :-
Q.no.21, diameter of wheel is 130 cm how many revolutions will it make to cover a distance of 80
kilometre.
https://brainly.in/question/38313970