# CBSE Class 10-Mathematics: Chapter – 12 Areas Related to Circles Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 9**:

The circumference of a circular field is . Then its radius is

(a)

(b)

(c)

(d)

**Answer**:

(a)

**Question 10**:

If the perimeter of a circle is equal to that of a square, then the ratio of their area is

(a)

(b)

(c)

(d)

**Answer**:

(c)

**Question 11**:

Area of a sector of angle of a circle with radius R is

(a)

(b)

(c)

(d)

**Answer**:

(d)

**Question 12**:

Area of the sector of angle of a circle with radius is

(a)

(b)

(c)

(d) None of these

**Answer**:

(b)

**Question 13**:

The area of a circle is . Then the radius of the circle is

(a)

(b)

(c)

(d)

**Answer**:

(c)

**Question 14**:

If the sum of the areas of two circles with radii and is equal to the area of a circle of radius R, then

(a)

(b)

(c)

(d)

**Answer**:

(a)

**Question 15**:

Circumference of a sector of angle of a circle with radius R is

(a)

(b)

(c)

(d)

**Answer**:

(c)

**Question 16**:

If the perimeter and area of circle are numerically equal, then the radius of the circle is

(a)

(b)

(c)

(d)

**Answer**:

(a)