Question

The radius of wheel of a car is 28 cm . Find the number of revolution made by the wheel in order to cover a distance of 8.8 km.

Answer 1

Step-by-step explanation:

radius of wheel = 28 cm

Circumference of wheel = 2πr

= 2×22/7×28

= 176 cm

distance = 8.8×100×1000cm

= 880000cm

revolution= distance moved/circumference

revolution= 880000/176

= 5000

Answer 2

5000 revolution is made by the wheel in order to cover a distance of 8.8 km.

Step-by-step explanation:

The radius of a wheel of a car = 28 cm

The circumference of the wheel = 2πr

                                                     $=2\times\frac{22}{7}\times 28$

                                                    = 176 cm

Therefore one revolution cover a distance of 176 cm.

100000 cm = 1 km

176 cm = 176/100000 = 0.00176 km

To cover a distance of 8.8 km

=  $\frac{8.8}{0.00176}$

= 5000 revolution

5000 revolution is made by the wheel in order to cover a distance of 8.8 km.

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