The radius of a circular wheel of a toy car is 56 mm. In how many revolutions can it cover a distance of 176 cm? [Use π = $\frac{22}{7}$]
Answer & explanation
Correct answer: option 3
We know that,
Distance covered in one revolution = 2πr
Radius of a wheel of a toy car = 56 mm.
Distance covered in one revolution = 2 × \(\frac{22}{7}\) × 56 = 352mm
We have,
Total distance covered = 176 cm = 1760 mm
Number of revolutions he makes = \(\frac{1760}{352 }\) = 5