Question

a car wheel has a diameter of 48cm.how many revolutions does the wheel make on a journey of 12km?​

Answer 1

Step-by-step explanation:

radius = 24 cm

circumference = 2πr

= 2*22/7*24

= 150.86 cm

for 1 revolution it takes 150.86 cm

so for 12 km the wheel takes 7954 revolutions

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And ram u made mistake 12 is km and circumference is in cm so convert 12 km to cm or cm to km and u must divide not multiply

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Answer 2

Answer:

d = 48 cm

circumference of circle =

$\pi \: d$

= 22 / 7 × 48

= 22 × 6.85

= 150.7 cm.

revolutions wheel make on a journey of 12 km =

= 150.7 × 12

= 1808