Question

circles. lake
3. The outer circumference of a circular track is 194.68 m and the track is everywhere 6 m
wide. Find the cost of levelling the track at the rate of 25 paise per m? ​

Answer 1

Answer:

Let the radius of outer circle be R

Given: Circumference of outer circle = 194.68 m

⇒ 2πR = 194.68 m

⇒ 2 × 3.14 R = 194.68 m

⇒ Radius of inner circle (r) = Radius of outer circle – width

= 31 m – 6 m = 25 m

Thus area of track = area of outer circle – Area of inner circle

= πR2 – πr2 = π (R2 – r2)

Now cost of leveling 1 m2 = 25 paise = Rs 0.25

Hence cost of leveling track = Rs 0.25 × 1056 = Rs 264

Answer 2

Answer:

sorry bro I dont

Step-by-step explanation:

knowwwwwwwwwwwwwwwww