Question

The slant height of a cone is 5 cm and the radius of its base is 3 cm. find the volume of the cone.

Answer 1

Hello Dear !_____________________________________________________________

Given !
slant height (l)      = 5 cm 
radius          (r)     = 3 cm 
volume        (V)    = ?
_____________________________________________________________As we know , 
l²  = r² + h²
5² = 3²+ h²
h² = 5²-3²
h² = 25 - 9 
h² = 16 
h  = 4 cm 
___________________________________________________________
Volume (V) = πr²h
                   = 22/7 X 3 X 3 X 4
                   = 792/7
                   = 113.14 cm³
___________________________________________________________

Answer 2

Hi there !

slant height  =   l  = 5 cm 
radius =   r   = 3 cm 
height = h

l²  = r² + h²

5² = 3²+ h²

h² =l² - r²
   
h² = 25 - 9 

h² = 16 

h  = 4 cm 

Volume  = πr²h
                   = 22/7 x  3 x  3 x  4
                  
                   = 113.14 cm³