the surface area of a sphere is 10182/7sq CM. what is it's volume
Bunti360:
Is it 10182/7 or 10182??
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Surface area of a sphere whose radius is r is 4πr²,
and also Volume will be (4/3)πr³,
Assuming π = 22/7
Let radius of sphere be r,
Given that surface area of sphere = 10182/7 cm²,
=> 4πr² = 10182/7 cm²,
=> πr² = 2545.5/7 cm²,
=> r² = 2545.5 / 22 cm² since 7 gets canceled,
=> r² = 115.704 cm²,
=> r is nearly equal to 10.7 cm , So I am taking 11 cm approximately,
Now, Volume = 4/3*πr³,
=> (4/3) * 22/7 * 11 *11*11 cm³,
=> 5577.5 approximately ,
Hope you understand, Have a great day !
and also Volume will be (4/3)πr³,
Assuming π = 22/7
Let radius of sphere be r,
Given that surface area of sphere = 10182/7 cm²,
=> 4πr² = 10182/7 cm²,
=> πr² = 2545.5/7 cm²,
=> r² = 2545.5 / 22 cm² since 7 gets canceled,
=> r² = 115.704 cm²,
=> r is nearly equal to 10.7 cm , So I am taking 11 cm approximately,
Now, Volume = 4/3*πr³,
=> (4/3) * 22/7 * 11 *11*11 cm³,
=> 5577.5 approximately ,
Hope you understand, Have a great day !
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