Question

A person walks around a circular track of radius 14m with a speed of 4km/hr .if he takes 20 rounds of the track for how long does he walk

Answer 1

$C = 2\pi r\times 20\\\\\\= 2\times \frac{22}{7}\times 14\times 20$

$80\times 22\times 10^{-3}\ km$

$S = \frac{D}{T} \\\\\\T = \frac{80\times 22\times 10^{-3} }{4} \\\\\\44\times 10^{2}\ hours\\\\\\1584\ seconds$

$Follow\ Me$

Answer 2

Answer:

$c = 2\pi \: r$×20