Question

please solve it urgent​

Answer 1

Answer:

Diameter of wheel = 3.5 metre

Step-by-step explanation:

in 200 revolution wheel covers 2200 metre

in 1 revolution it will cover 2200 / 200 = 11 metre.

circumference of wheel = 11 metre.

2πr = 11

Since, Diameter = 2* radius

πD = 11

22/7 * D = 11

22D / 7 = 11

22D = 77

D = 77 / 22

D = 7 / 2

D = 3.5 metre..

3.5 metre is the correct answer.

Hope it will be helpful for you.

Answer 2

Given :

The road roller makes 200 revolutions to cover a distance of 2200 m

To find :

Diameter of road roller ( d ) = ?

Solution :

Roller makes 200 revolutions to cover distance = 2200 m

Therefore ,,,,,

The distance covered by roller in 1 revolution =

$= \frac{2200}{200} \\ \\ = 11m$

$2\pir = 11 \\ \\ 2r = \frac{11}{ \frac{22}{7} } \\ \\ d = 11 \times \frac{7}{22} \\ \\d = \frac{7}{2} \\ \\ d = 3.5$

Therefore ,,,, the diameter of the road roller is 3.5 m

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