Question

# If the radius and the height of a cone is 3 cm and 4 cm respectively, then its slant height is .

A
5 cm
B
4 cm
C
7 cm

Solution

## The correct option is A 5 cmGiven, the radius of the cone 'r' = 3 cm,  the height of the cone 'h' = 4 cm.  Applying pythagoras theorem, we get, r2+h2=l2 ⇒32+42=l2 ⇒l=√32+42 cm =√9+16 cm √25 cm =5 cm

Suggest corrections