Question

find the area of circular path if radius of outer circle is 10m and inner circle is 7 m . what will be the cost od cementing it at the cost os cementing it at the cost od rs 300 per aq metre ?​

Answer 1

Answer:

Solutions:

radius of the outer circle = 10m

radius of the inner circle = 7m

area of the outer circle = pi ×r^2

area = 3.14 ×10^2

area = 314m^2

area of the inner circle = pi×r^2

area = 3.14×7^2

area = 153.86m^2

area of the circular path = 314-153.86 m^2

area = 160.14

cost of cementing per meter =₹300

cost of cementing the path =₹(300×160.14)

cost =₹ 48042