1.

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Answer»

Step-by-step explanation:

3. Circumference of a circle = πd = 22/7 X 0.7 =2.2m

When wheel completes 1 rotation it crosses a distance of 2.2m (1 rotation = 1 circumference)

Total number of rotations = distance/circumference

= 22000/2.2

= 220000/22

= 10000

A wheel completes 10000 rotations to cover the distance of 22km.

4. I'm SORRY I don't KNOW this answer

5.Given

Diameter of circle = 14 CM

We know that

Radius r = \(\frac { 14 }{ 2 }\) = 7 cm

Circumference of circle = 2πr

= 2 × \(\frac { 22 }{ 7 }\) × 7

= 44 cm



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