#### If the ratio of the radii of two circles is 2 then the ratio of their circumferences is

(a) 2 : 3

(b) 3 : 2

(c) 4 : 9

(d) 9 : 4

**Solution:**

#### If the ratio of the radii of two circles is 3 : 5, then the ratio of their areas is

(a) 3 : 5

(b) 5 : 3

(c) 25 : 9

(d) 9 : 25

**Solution:**

**More Solutions:**

- Find the cost of flooring a room 6.5 m by 5 m.
- Find the cost of covering the floor if each tile costs ₹ 27.
- A rectangular plot of land is 50 m wide.
- Find the area of each of the following parallelograms:
- Find the area of each of the following triangles:
- Find the missing values:
- Find the following missing values: