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10 October, 19:20

Joseph is building a cone using modeling clay. The cone has a radius of 6 cm and a height of 12 cm. Joseph adds additional clay, keeping the radius the same, until the cone reaches a height of 18 cm.

How much clay did Joseph add?

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

cm3

+3
Answers (2)
  1. 10 October, 19:22
    0
    Cone Volume = (π • r² • h) : 3

    Original cone = (3.14 * 6^2 * 12) / 3

    Original cone = 452.16 cc

    Larger cone = (3.14 * 6^2 * 18) / 3 = 678.24 cc

    Difference = (678.24 - 452.16) = 226.08 cc
  2. 10 October, 19:47
    0
    They used 8 cm of clay
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