Ask Question
4 August, 16:22

A machine coats metal spheres with a plastic coating. The metal spheres have a radius of 9 mm the spheres formed by the metal and plastic coating have a radius of 12 mm.

How much plastic coating is on each sphere.

Use 3.14 to approximate pi and express your answer in hundredths.

+3
Answers (1)
  1. 4 August, 16:32
    0
    You need to find the volume of the coated sphere and then take away the volume of the original sphere.

    Volume of sphere = 4 thirds x pi x r cubed

    (4 x 3.14 x 12 x 12 x 12) / 3 = 7234.56

    (4 x 3.14 x 9 x 9 x 9) / 3 = 3052.08

    take away = 4182.48
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A machine coats metal spheres with a plastic coating. The metal spheres have a radius of 9 mm the spheres formed by the metal and plastic ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers