A cylindrical cardboard mailing tube has a diameter of 90 mm. and a height of 600 mm. A total of 20% of the tube’s capacity is filled with spherical packing foam. Each foam sphere has a radius of 15 mm.

Approximately how many pieces of foam are in the tube?
Use 3.14 to approximate pi and express your answer as a whole number.

Question

A cylindrical cardboard mailing tube has a diameter of 90 mm. and a height of 600 mm. A total of 20% of the tube’s capacity is filled with spherical packing foam. Each foam sphere has a radius of 15 mm.
 
Approximately how many pieces of foam are in the tube?
Use 3.14 to approximate pi and express your answer as a whole number.

pinklion23 · Answer

i might be able to help

pinklion23 · Answer

to find the area of a cylinder you have to do A=2πrh+2πr2

pinklion23 · Answer

dang it is not showing up hold on

pinklion23 · Answer

A=2pirh+2pir^2

pinklion23 · Answer

to find the area of a sphere you have to do A=4pir^2

pinklion23 · Answer

so the area of the tube is A=is about 1.82*10^5

pinklion23 · Answer

the area of on sphere is about 2827.43

pinklion23 · Answer

hope that helped :)