Question

diameter of a car wheel is 49cm . find how many turns will it take to cover a distance of 3080 cm.

Answer 1

Diameter of wheel = 49 cm

Radius = 49 /2 cm

Circumference of wheel = 2 pi r

= 2 × 22 × 49 / 7 × 2

= 22 × 7

= 154 cm

Distance covered = 3080 cm

Number of turns = Distance travelled / Circumference of wheel

= 3080 / 154

= 20

Answer 2

Diameter given as 49cm


We need to calculate circumference first.

So circumference = 2πr
or
circumference = πd

So given circumference =
$\frac{22}{7} \times 49 \\ = > 154cm$
To calculate number of rotation (turns) done divide the distance by circumference

hence number of turn =
$3080 \div 154 = 20$
hence, it took 20 turns


Hope it helps dear friend ☺️✌️