Question

A circular track has an inside circumference of 440 m. If the width of the track is 7m, what is the cost of fencing the outer circle at the rate of Rs.3 per meter.

Answer 1

Please mark my answer brainiest plzzz

Answer 2

The cost of fencing the outer circle at the rate of Rs.3 per meter is Rs.1452

Step-by-step explanation:

Circumference of circle =$2 \pi r$

inner circumference = 440 m

$2 \pi r = 440$

$2 \times \frac{22}{7} \times r = 440$

$r= 440 \times \frac{7}{22 \times 2}$

r=70

Inner radius = 70 m

Width = 7 m

Outer radius= inner radius +Width = 70+7 = 77 m

Outer circumference = $2 \pi r = 2 \times \frac{22}{7} \times 77 = 484 m$

Cost of fencing 1 m = Rs.3

Cost of fencing 484 m = $484 \times 3 =Rs.1452$

Hence the cost of fencing the outer circle at the rate of Rs.3 per meter is Rs.1452

#learn more:

The inner circumference of a circular track is 220m. the track is 7m wide everywhere. calculate the cost of fencing along the outer circle at the rate of Rs 2 per m.

https://brainly.in/question/13680531