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Amiraneli [1.4K]
3 years ago
6

A roll of 100 pennies is in the shape of a right cylinder. Each penny has a diameter of 0.75 inches and a thickness of 0.04 inch

es. Which expression, when simplified, would be equal to the volume of the roll of pennies in cubic inches?

Mathematics
2 answers:
zalisa [80]3 years ago
6 0

Answer:

  • (B) π(0.75/2)²(4)

Step-by-step explanation:

<u>The volume formula:</u>

  • V = πr²h

<u>Given:</u>

  • d = 0.75 in ⇒ r = d/2 = 0.75/2 in
  • h = 0.04 in

<u>The volume of each penny:</u>

  • V = π(0.75/2)²(0.04)

<u>The volume of 100 pennies:</u>

  • V = 100*π(0.75/2)²(0.04) = π(0.75/2)²(4)

Correct choice is B

zloy xaker [14]3 years ago
6 0

<u>Given </u><u>:</u><u>-</u>

  • Roll of 100 pennies is in shape of right cylinder .
  • Diameter of penny = 0.75 in.
  • Thickness = 0.04 in.

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>

  • The volume of roll .

<u>Answer</u><u> </u><u>:</u><u>-</u>

As we know that ,

  • Volume of cylinder = πr²h

Substitute the values ,

  • V = π * (d/2)² * thickness
  • V = π *(0.75/2)² * 0.04 in³

Hence for 100 ,

  • V = 100 * 0.04 * π * (0.75/2)²
  • V = π 4 (0.75/2)²
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