Question

The radius of a circular wheel is 14 m. How many revolutions will it make in travelling 88 km?​

Answer 1

Answer:

⁸ep-by-step explanation:

\begin{gathered} Radius \: of \: a \: circular\\wheel (r) = 1.75 \:m \end{gathered}

Radiusofacircular

wheel(r)=1.75m

\begin{gathered} Distance \: traveling \: in \\1 \: revolution(C) = circumference \: of \: the \: wheel\\ =2\pi r\\= 2 \times \frac{22}{7} \times 1.75 \:m \\=44 \times 0.25\\=11\:m \end{gathered}

Distancetravelingin

1revolution(C)=circumferenceofthewheel

=2πr

=2×

7

22

×1.75m

=44×0.25

=11m

\begin{gathered} Number \: revolutions \\made \: by \: the \: wheel \\in \: traveling \: 11\:km\\ = \frac{11\:km}{C}\\=\frac{11000\:m }{11\:m }\\=1000\end{gathered}

Numberrevolutions

madebythewheel

intraveling11km

=

C

11km

=

11m

11000m

=1000

Therefore,

Number \: revolutions = 1000Numberrevolutions=1000