Question

a circular Garden has a radius 42 m diameter 7 centimetre wide road run on the outside around it cost of constructing the road at rupees 50 per metre square​

Answer 1

Answer: ₹ 53900

Step-by-step explanation:

Please specify is 42 the radius or the diameter.

I am considering it to be diameter

Radius = 21 m

Area of circle = πr^2 = 22/7 × 21 × 21

= 1386 m^2

Width of road = 7 m ( It should be m instead of cm)

New radius = 21 + 7 = 28 m

New area = 22/ 7 × 28 × 28 = 2464 m^2

Area of path = 2464 - 1386 = 1078 m^2

Cost = 50 × 1078 = ₹ 53900

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