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3 years ago

Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?

Mathematics

1 answer:

Annette [7]3 years ago

7 0

Answer:

The volume of the ball is $V=2,304\pi\ cm^{3}$ or $V=7,234.56\ cm^{3}$

Step-by-step explanation:

we know that

The volume of the sphere ( a ball) is equal to

$V=\frac{4}{3}\pi r^{3}$

we have

$r=24/2=12\ cm$ -----> the radius is half the diameter

substitute

$V=\frac{4}{3}\pi (12)^{3}$

$V=2,304\pi\ cm^{3}$ ----> exact value of the volume

assume

$\pi =3.14$

substitute

$V=2,304(3.14)=7,234.56\ cm^{3}$ -----> approximate value

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A metal rod will be cut into pieces that are each 1/56 meters long. The rod is 7/8 meters long. How many pieces will be made fro

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<h3><u>Solution:</u></h3>

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The rod is 7/8 meters long.

<em><u>To find: number of peices made from rod</u></em>

The number of peices made from rod can be calculated by dividing the total length of rod by length of each piece

$\text {number of pieces made }=\frac{\text {total length of rod }}{\text { length of each piece}}$

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