Question

The base area of a cone is 38.5 cm². Its volume is 77 cm3. Find its height.
dito height.​

Answer 1

Answer:

height = 6cm

Step-by-step explanation:

area of base of cove i.e area of circle i.e πr^2

given πr^2= 38.5= 77/2 cm^2

and volume of cone is also given i.e

1/3πr^2h= 77cm^3

put value of πr^2 from above in volume we get

1/3×77/2×h= 77

cancel out 77 both side we get

h/3×2=1

h=6cm