NCERT Class 10 Chapter 12 Areas Related to Circles CBSE Board Sample Problems Very Short Answer
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Question
The circumference of a circle is equal to sum of circumference of 2 circles having diameter 34 cm and 28 cm. Find the radius of the new circle.
Solution
Let radius of new circle be r cm
Question
A race track is in the form of a ring whose inner and outer circumference are 437m and 503m respectively. Find the width of the track.
Solution
amid
and
Width of the track
Question
The radius of a bicycle wheel is 14cm. Find the distance covered by the wheel after 50 complete rotations.
Solution
Circumference
= 88cm
Distance covered in 50 rotations
Question
Find the radius of the circle whose area is numerically equal to three times its circumference.
Solution
Question
Find the perimeter of a protractor having length of its base as 14 cm.
Solution
Perimeter