Question

find the height of a cone whose radius of base is 40 cm and curved surface area is 1640

Answer 1

Answer:

curved surface area of cone is=1640*22/7cm

radius is =40cm

formula is=1/3*22/7*r*h

hence equation formed=

1/3*22/7*40*h=1640*22/7

h=1640*22/7*7/22*3/40=123cm