Area of wheel is 6.16cm^2 ,distance
covered by it is 572cm .Find number of revolutions.
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area of circle = πr^2
6.16 = 22/7 × r^2
6.16 × 7/22 = r^2
1.96 = r^2
r = √1.96
r = 1.4 cm
circumference = 2πr = 2 × 22/7 × 1.4 = 8.8 cm
no. of revolutions = distance covered / circumference
= 572 /8.8 = 65 revolutions.
6.16 = 22/7 × r^2
6.16 × 7/22 = r^2
1.96 = r^2
r = √1.96
r = 1.4 cm
circumference = 2πr = 2 × 22/7 × 1.4 = 8.8 cm
no. of revolutions = distance covered / circumference
= 572 /8.8 = 65 revolutions.
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