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Subjects
Mathematics State Board
Class 7
Measurements
Circumference of a Circle
13.
Four mark exercise problems III
Exercise condition:
8
m.
1
. A wheel of a car covers a
distance
of
3520 \ cm
in
20
rotations. Find the
radius
of the wheel?
Answer
:
Radius
=
cm
2
. The
cost
of fencing a circular race course at the rate of
₹8
per metre is
₹2112
. Find the
diameter
of the race course.
Answer
:
Diameter
=
m
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