Question

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

Answer 1

v=1/3×πr^2h

πr^2=38.5

v=77

h=77×3/38.5

h=6cm

Answer 2

Answer:

Answer=6

The base area of a cone is 38.5 cm²

base area of a cone=πr²

πr²=38.5

Volume of a cone is 77 cm²

Volume of a cone=(1/3)πr²h

=(1/3)πr²h

putting πr²=38.5

• (1/3) (38.5)h=77
• (1/3)h=2
• h=6