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

Question

Mathematics

Belinda Pope

15 September, 20:18

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

+5

Answers (2)

Know the Answer?

Karina Braun · Answer 1

Karina Braun 15 September, 22:23

0

They used 8 cm of clay

Marin Francis · Answer 2

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