# NCERT Class 10 Chapter 12 Areas Related to Circles CBSE Board Sample Problems Very Short Answer (For CBSE, ICSE, IAS, NET, NRA 2022)

Glide to success with Doorsteptutor material for CBSE/Class-12 : get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-12.

## 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