Question

A carriage wheel makes 1500 revolutions in going over a distance of 4.5 kilometres,
Find its radius taking pie 3.14
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Answer 1

Step-by-step explanation:

pi = 3.14

4.5 km = 4500 m

circumference = 2(pi)r

1500(2(pi)(r)) = 4500 m

3000(3.14)r = 4500

r = 4500/[(3000)(3.14)]

r = 0.47771 m

(0.47771 m)(100 cm/m) = 47.771 cm

Answer 2

Distance covered or going on =4.5×10³ m

Number of revolution =1500

Distance travelled in 1 revolution=2×3.14×R

Distance travelled in 1500 revolution =2×3.14×1500×R

R×2×3.14×1500=4.5×10³

R=4.5×10³/9420

R=0.47m

D=0.47×2

D=0.94m