Question

the inner and outer circumference of a circular wheel is 154 cm and 88 cm .find the width of the wheel.plss help me.

Answer 1

Solution:
Since we know that circumference = π × dia
& given that inner circumference is 88 cm
Therefore, inner diameter (d),
88 = π x d
or d = 28 cm

& since outer circumference is 154 cm.
Therefore, outer diameter (D),
154 = π × D
or D = 49 cm

Therefore, width of the wheel = (49 - 28)/2
= 21/2
= 10.5 cm.

Hence, width of the wheel is 10.50 cm.

Hope you got it!

Answer 2

we know c =pi x d
154=pi x d
d = 154÷pi
d1= 49.01
lly 88= pi x d
d= 88÷pi
d2= 28.01

therefore d1-d2= 49.01-28.
01 = 21 cm