Celeste made 6 cone shaped ice blocks that each have a radius of 2.8 in. and a height of 7 in. She used a cylindrical container with a radius of 9 in. to fill all of the cones. What is the height of the cylindrical container? Use 3.14 to approximate pi and round your answer to two decimals places. show your work.

Relax

Respuesta :

Volume (cone) = (1/3)(b xĀ  h)
b=base
h=height
1) we calculate the total volume of the 6 cones:
Total volume of the 6 cones.=6(1/3)(b x h=2(b x h)
base: Ļ€r²=Ļ€(2.8 in)²=7.84 in²

Total volume=2(7.84Ļ€ in² * 7 in)=109.76Ļ€ in³

2) we calculate the Volume of the cylindrical container.
Volume (cylinder)=base * height
base=Ļ€r²=Ļ€(9 in)²=81Ļ€ in²

Volume=(81Ļ€ in² * h)=81Ļ€h in²

Therefore:
VolumeĀ  of the 6 cones= volume of the cylinder
109.76Ļ€ in³=81Ļ€h in²
h=(109.76Ļ€ in³) / (81Ļ€ in²)=1.3550 inā‰ˆ1.36 in

Answer: The height is 1.36 in.