Question

4. A bicycle wheel is 1 m 26 cm in diameter. Calculate
(i) the distance travelled in one rotation of the wheel and
(ii) the number of rotations of the wheel needed to cover 1.98 km.​

Answer 1

Step-by-step explanation:

diameter of the wheel = 1.26m =0.126km

distance travelled in one rotation=circumference of the wheel (circle)

=

$\pi \times d \\ = \frac{22}{7} \times 0.126 \\ = 0.396$

i)the wheel travelled distance of 0.396 km or 3.96 m in one rotation.

$no. \: of \: rotations \: in \: 1.98km = \frac{total \: distance}{distance \: covered \: in \: one \: rotation} \\ = \frac{1.98}{0.396} \\ = 5$

therefore 5 rotations will be needed to cover1.98 km of distance.

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Answer 2

Answer:

(i) 3m 96cm

(ii) 500

Step-by-step explanation:

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