Question

The distance covered by a wheel in 5 revolutions is 200 m . Find the diameter of the circle​

Answer 1

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$200 \times circumference = 5km \\ 200 \times 2\pi \: r = 5000m \: (km \: convert \: into \: meter) \\ 2 \times 2 \times \frac{22}{7} r = 50 \\ 4 \times \frac{22}{7}r = 50m \\ r = \frac{50 \times 7}{4 \times 22} \\ r = \frac{350}{88} \\ r = 3.9 \\ diameter = 2r \\ hence ,\\ d = 2 \times 3.9 \\ diamter = 7.8m.$.

${\green{\boxed{\bigstar{\mathbb{\huge{diamter \: of \: circle \:7.8m.}}}}}}$

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