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mestny [16]
2 years ago
6

The volume of a sphere is 4,500π cubic yards. What is the radius of the sphere?

Mathematics
2 answers:
svetlana [45]2 years ago
7 0

Answer:

  • <u>1</u><u>5</u><u> </u><u>yards</u>

Step-by-step explanation:

In this question we have provided <u>volume </u><u>of </u><u>sphere</u><u> </u>that is <u>4</u><u>5</u><u>0</u><u>0</u><u>π</u><u> </u><u>cubic </u><u>yards </u><u>.</u> And we are asked to find the radius of the sphere .

We know that ,

\qquad \:  \frak{Volume_{(Sphere)} = \dfrac{4}{3}\pi r {}^{3} } \quad \bigstar

<u>Where</u><u> </u><u>,</u>

  • r refers to <u>radius </u><u>of </u><u>circle</u>

<u>Solution</u><u> </u><u>:</u><u> </u><u>-</u>

As in the question it is given that volume of sphere is 4500π . So equation it with volume formula :

<u>\dashrightarrow \:   \qquad \: \dfrac{4}{3} \pi r {}^{3}  = 4500\pi</u>

<u>Step </u><u>1</u><u> </u><u>:</u> Cancelling π as they are present on both sides :

\dashrightarrow \:   \qquad \: \dfrac{4}{3}  \cancel{\pi }r {}^{3}  = 4500 \cancel{\pi}

We get ,

\dashrightarrow \:   \qquad \: \dfrac{4}{3}  r {}^{3}  = 4500

<u>Step </u><u>2</u><u> </u><u>:</u> Multiplying with 3/4 on both sides :

\dashrightarrow \:   \qquad \: \dfrac{ \cancel{4}}{  \cancel{ 3}} r {}^{ 3} \times  \dfrac{ \cancel{3}}{ \cancel{4}}   = \cancel{ 4500} \times  \dfrac{3}{ \cancel{4} }

On further calculations, We get :

\dashrightarrow \:   \qquad \: r {}^{3}  = 1125 \times 3

\dashrightarrow \:   \qquad \:r {}^{3}  = 3375

<u>Step </u><u>3 </u><u>:</u> Applying cube root on both sides :

\dashrightarrow \:   \qquad \:   \sqrt[3]{r {}^{3} }  =  \sqrt[3]{3375}

We get :

\dashrightarrow \:   \qquad \:    \purple{\underline{\boxed{\frak{r = 15  \: yards}}}}

  • <u>Therefore</u><u> </u><u>,</u><u> </u><u>radius </u><u>of </u><u>sphere</u><u> </u><u>is </u><u>1</u><u>5</u><u> </u><u>yards </u><u>.</u>

<h2><u>#</u><u>K</u><u>e</u><u>e</u><u>p</u><u> </u><u>Learning</u></h2>
algol [13]2 years ago
5 0

Answer:

  • 15

Step-by-step explanation:

In the question it is given that the volume of a sphere is 4,500π cubic yards. And we have to find the radius.

We know that,

  • 4/3πr³ = Volume of a sphere

Now, Substituting the values in the fomulae :

⇒ 4/3πr³ = 4500π

Cancelling π from both sides :

⇒ 4/3r³ = 4500

⇒ 4r³ = 4500 × 3

⇒ 4r³ = 13500

⇒ r³ = 13500/4

⇒ r³ = 3375

Taking cube root on both sides we get :

⇒ r = 15

Therefore,

  • <u>The radius of the sphere is 15 yards</u>
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