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Find the diameter of a wheel that makes 113 revolutions to go 2 km 26 decameters. (Take p = 22 7 )
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4 4 m 13 -
6 4 m 11 -
12 4 m 11 -
12 8 m 11
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Correct Option: B
Using Rule 7,
The distance covered = 2 km 26 decameters
= (2 ×1000 + 26 × 10) m. = 2260 m.
| The distance covered in one revolution = | |
| Number of revolutions |
| = | = 20 m. | |
| 113 |
Clearly,
Circumference of wheel = distance covered in 1 revolution = 20 m π × diameter = 20 m.
| Diameter = | = | |||
| π | 22 |
| = | = 6 | m | ||
| 11 | 11 |
