Question

a circular grassy plot 35 m in radius has a path 3.5 m wide running around it on the outside. find the cost of gravelling the path at ₹48 per square metre.​

Answer 1

Answer:

area of inner circle (only park)=

$2\pi \: r$

=2×22/7×35

=220m^2 (2)

area of outer circle (park+path)=2×22/7×38.5

=2×22×5.5

=242m^2 (1)

area of path =(1)-(2)

=242-220

=22m^2

cost = area ×rate

=22×48

=1056rupees

Step-by-step explanation:

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