The capacity of an ice cream cone is 66 cm³​. What is the radius( in cm) of its base if its height is 7 cm ( use $$\pi = \frac{22}{7}$$)​

Correct option is A

Given: 

Capacity(volume) of the ice cream cone = 66 cm³ 

Height, h = 7cm 

Formula Used: 

Volume of cone = $$\frac 13 \times \pi\times r^2 \times h$$​   

Solution: ​

Applying the formula:

​$$66 = \frac13 \times \pi \times r^2 \times 7 \\ \ \\ 66 = \frac13 \times \frac{22}{7}\times r^2 \times 7 \\ \ \\ \implies r^2 = \frac{66 \times 3}{22} \\ \ \\ r = \sqrt{3 \times 3} = 3 \ cm$$​​