Question

a circular flower bed has a diameter of 100 cm .a metal boundary costing rs 2per meter placed around it. find

length of metal boundary that will be
required to fence the flower bed twice.

Answer 1

hiii!!!

here's ur answer...

given the diameter of the circular flower bed = 100cm = 1m

therefore radius of the flower bed = 1/2 = 0.5m

circumference of the circular flower bed = 2πr

= 2 × 22/7 × 0.5

= 22/7m

ATQ, the cost of fencing is rs w at the rate per m.

hence, total cost of fencing = 22/7 × 2

= 44/7

= rs 6.28 (approx.)

hope this helps..!!