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Help me with this question please

Help me with this question please-example-1

1 Answer

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Given:

Handle

  • Height= 4 in
  • Diameter= 1 in

Main body

  • Height= 14 in
  • Diameter= 3 in

To find:

The total amount of wood needed to build the rolling pin.

Solution:


\huge\boxed{\sf{Formula: \pi {r}^(2) h}}


\huge\boxed{\sf{\red\pi \red= \red3\red.\red1\red4}}

Handle:


V = 3.14 * {0.5}^(2) * 4


V = 3.14 \: {in}^(3)


\boxed{\sf{V = 3.2 \: {in}^(3) }}

Main body:


V = 3.14 * {1.5}^(2) * 14


V = 98.91 \: {in}^(3)


\boxed{\sf{V = 99 \: {in}^(3) }}

Total:


V = 3.2+99


\large\boxed{\sf{V = 102.2 \: {in}^(3) }}

Hence, the total amount of wood needed to build the rolling pin is 102.2 cubic inches.

User Molokoka
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