4 A bicycle wheel has diameter 75 cm.
a) Calculate the length of its circumference to one decimal place.
b) How many times will the wheel rotate if a girl rides the bicycle
for 1 km?
Give your answer correct to the nearest whole number.
Please give the answer
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Answer:
Step-by-step explanation:
Diameter = 75 Cm ∴Radius = 75/2Cm
Circumference of circle = 2πr
=2×22/7×75/2
= 235.5Cm
Rotation In 235.5 Cm = 1
Rotations in 1 km = 100000/235.5 {1km = 100000Cm}
= 424 Rotations
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