A wheel covers a distance of 44metres after making 10 revolutions . What is the radius of the wheel in meters

A: 0.7 m

B: 1.4 m

C: 2.2 m

D: 7.0 m

Correct Answer : A

Given distance = 44m

Revolutions = 10

We use the formulae;

Circumference = distance/revolutions

C = 44/10

We can now use the circumference to get the radius of the wheel
Circumference =4.4m

Circumference = 2πr

4.4 = 2 × 22/7 × r

4.4 = 44/7 r

Multiply both sides by the reciprocal of 22/7;

R = 4.4 * 7/44

R = 0.7 m

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