Question

My math homework in khan due at 11 pm

Answer 1

We are given with a sphere whose radius is 7 units and we need to find the volume of the sphere , but before starting let's recall that ;

• 
  `{\boxed{\bf{Volume_((Sphere))=(4)/(3)\pi r^(3)}}}`

Where r is the radius of the sphere . So , now in this question applying the same concept we have ;

`{:\implies \quad \sf Volume_((Sphere))=(4)/(3)\pi (7)^(3)}`

`{:\implies \quad \sf Volume_((Sphere))=(4)/(3)\pi * 343}`

`{:\implies \quad \bf \therefore \quad \underline{\underline{Volume_((Sphere))=(1372\pi)/(3)\:\: units^(3)}}}`

Answer 2

Given :-

• figure is a sphere
• π = 3.14
• Radius = 7 (unit)
• answer should be in unit³

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To find :-

• As we know answer should have unit³ so we get to know we have to find volume of sphere.

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Solution :-

we know:

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`\bigstar \boxed{ \rm Volume \: of \: sphere = (4)/(3)\pi {r}^(3) }`

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So:-

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3)\pi {r}^(3) \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3)\pi * {7}^(3) \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3)\pi * {7} * 7 * 7 \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3)\pi * 343 \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3) * 3.14* 343 \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4)/(3) * 1077.02 \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4 *1077.02 )/(3) \\`

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`\dashrightarrow \sf Volume \: of \: sphere = (4308.08)/(3) \\`

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`\dashrightarrow \pmb{\sf Volume \: of \: sphere =1436.03(approx)} \\`

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