7. filament for 3d printing is sold in spools that contain something shaped like a wire of diameter 3 mm. john wants to make 3d printings of a cone with radius 2 cm and height 3 cm. the length of the filament is 25 meters. about how many cones can john make?

14 cones

Step-by-step explanation:

First we need to discover the total volume of the wire that we have available to make the cones, so we treat it as a long circular prism, with radios of 1,5 mm and 25,000 milimeters height:

Now we just have to calculate the volume of the cone:

And finally we just have to divide the volume available between the volume necessary for each cone:

176,635/12,566=14.05

60: 45 =12: 9 =4: 3 so the answer is 4: 3