Question

the diameter of a wheel of a car os 77 cm . find the distance covered by the wheel in 500 revolutions.

Answer 1

Hi !!!

Here is your answer,

Given : -
Diameter of wheel = 77cm

radius = diameter/2 = 77/2cm

Circumference = 2πr
= 2*22/7*77/2
= 242cm

1 revolution = 242cm
So,
In 500 revolution the wheel will cover 500*242 = 121000cm

As 1m = 100cm
212000cm/100 = 1210m


Hope it helps.

Answer 2

$Hello... \\ Answer \\ \\ Given, \\ \\ Diameter \: \: of \: \: the \: \: wheel = 77cm \\ \\ Radius = \frac{Diameter}{2} = \frac{77}{2} cm \\ \\ Circumference = 2\pi \: r \\ \\ = 2 \times \frac{22}{7} \times \frac{77}{2} \\ \\ = 242cm \\ \\ 1 \: \: Revolution = 242cm \\ \\ So, \: \\ \\ In \: \: 500 \: \: revolutions, \: \: the \: \: wheel \: \: will \: \: cover \: \: \\ \\ = 500 \times 242 \\ \\ = 121000cm \\ \\ As, 1m = 100cm \\ \\ 121000 + 100 = 1210m \\ \\ \\ \\ Hope \: \: it \: \: helped$
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