Question

A road roller makes 200 rotations in covering 2200m find the radius of the roller

Answer 1

Area Coverd in 200 rotation = 2200 m
Area covered in 1 rotation = (2200/200) m
Area covered in 1 rotation = 11 m

Area = 11 m

$= > 2 \pi \: r \: = 11$

$= > 2 \times \frac{22}{7} \times r = 11$

$= > \frac{44}{7} \times r = 11$

$= > \: r \: = 11 \times \frac{7}{44}$

$= > \: r \: = \frac{77}{44}$

$= > \: r \: \: = 1.75 \: m \:$


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Answer 2

Refer to the attachment please.