Question

the diameter of a circular Park is 74 metre a uniform part 3 metre wide runs around outside find the cost of levelling the path at rupees 15.50 peche Amita​

Answer 1

Answer:

rs 11253

Step-by-step explanation:

area of the circle=πr²

area of circle with radius 37m

(A1)=3.14×37×37

=4298m²

according to question

3m wide runs around outside the park

diameter of the park with runs around the park=80m

radius of the park=40m

area of the park(A2)=3.14×40×40

=5024m²

area of the wide run around the park

I.e. A2-A1=5024-4298=726m

cost of peche=726×15.50=rs11253

Answer 2

Answer:

Rs.2002

Step-by-step explanation:

Internal Radius = 21 m, External Radius =21+3.5=24.5 m

Area of path = π(24.5)2−π(21)2

⇒π[(24.5)2−(21)2]

=500.5

Cost of travelling =500.5×4=Rs.2002

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