Q. 23.9( 7 Votes )

# The radius of a c

Answer :

Given the rate of repair work per m^{2} = Rs. 25

The radius of the outer circle (R_{1}) = 63 cm

radius of the inner circle (R_{2}) = 63 – 7

= 56 cm

(∵ the distance between the inner circle and outer circle is 7 cm)

Let the measured angle is 60^{o}

area of the repair road = () – ()

= () – (

= 436.15 m^{2}

cost required to repair the road = 436.15 × 25

= Rs. 10,903.9445 (approximately)

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