A bicycle wheel makes 500 revolution in moving 1km find its diameter
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Total distance covered = 1km = 100000 cm
No. Of revolution = 500
Circumference of wheel = 100000/500
= 200 cm
Circumference = 200
=> 2*pi *r = 200
=> pi *d = 200
=> d = 200 * 7/22
=> d = 1400/22
=> d = 700/11
=> d = 63.64
Diameter of wheel = 63.64 cm
No. Of revolution = 500
Circumference of wheel = 100000/500
= 200 cm
Circumference = 200
=> 2*pi *r = 200
=> pi *d = 200
=> d = 200 * 7/22
=> d = 1400/22
=> d = 700/11
=> d = 63.64
Diameter of wheel = 63.64 cm
gaurav2013c:
It's in centimetres
1 km = 1000 m
1 km = 1000 * 100 cm
1 km = 100000 cm
Why r we multiplying 100cm
To convert it into cm
use your common sense the Diameter of wheel is in metres or centimetres
Oh I get it!thx so much teacher
Again welcome sister :) :)
700\11_63.63
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