The wheel of a tractor has a diameter 1.4m. What distance does it cover in 100 complete revolutions? [Take \(\pi = \frac{22}{7}\)]
A
140m
B
220m
C
280m
D
440m
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
radius = \(\frac{diameter}{2}\) = \(\frac{1.4}{2}\)
= 0.7m
circumference = 2\(\pi r = 2 \times \frac{22}{7} \times 0.7m = 4.4m\)
distance covered = 4.4m x 100 = 440m
Source: Myschool Past Questions Archive (Record #36191)