Question

The diameter of wheel of car is 63 cm Find the distance travelled by the car during the period in which the wheel mikes 1000 revolutions

Answer 1

diameter = 63cm

revolutions = 1000

radius = 63/2

circumference

= 2 π r

= 2 × 22/7 × 63/2

= 198cm

distance = 1000 × 198 = 198000cm

hope it helps

Answer 2

Answer:

$\huge\underline\textsf{ 1.98cm }$

$\huge\underline\textsf{Explantion:- }$

$\leadsto\bf diameter = 63cm \\ \leadsto\bf radius = \frac{63}{x} = 31.5$

$\leadsto\boxed{\bf no.of \: revolution = \frac{distance}{circumference \: of \: wheel}}$

$\leadsto\bf1000 = \frac{distance}{2\pi \: r}$

$\leadsto\bf1000 = \frac{distance}{2 \times \frac{22}{7} \times 31.5 }$

$\leadsto\bf1000 = \frac{distance}{198}$

$\leadsto\bf distance = 1000 \times 198 \\ \leadsto\bf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 198000cm \\ \leadsto\bf\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1.98cm$