Question

The diameter of a wheel is 42 cm. How much distance will it cover in 5 revolutions?

Answer 1

Answer:

πd=22/7*42

=22*6

132cm

132*5=660

Step-by-step explanation:

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Answer 2

Given:

Diameter = 42 cm

Number of revolution = 12

Concept used:

Circumference = 2πr

Total distance = Number of revolution × Circumference

Calculation:

Radius = Diameter/2

⇒ Radius = 42/2

⇒ Radius = 21

Circumference = 2πr

⇒ Circumference = 2 × 22/7 × 21

⇒ Circumference = 2 × 22 × 3

⇒ Circumference = 132

Total distance = Number of revolution × Circumference

⇒ Total distance = 12 × 132

⇒ Total distance = 1584 cm

⇒ Total distance = 1584/100 m

⇒ Total distance = 15.84 m

∴ The wheel go 15.84 m.

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