Question

10.The volume of a sphere whose radius r is:

a.4/3πr

3

b.4πr

3

c.2πr

3

d.⅔ πr3 need only the answer pls.​

Answer 1

The volume of a sphere whose radius r is 4πr³/3

Answer 2

$\Large {\underline {\underline {\text {\maltese \: {\red {Question :-}}}}}}$

The Volume of a Sphere whose Radius r is :-

(a) $\dfrac{4}{3} \pi r^3$

(b) $4 \pi r^3$

(c) $2 \pi r^3$

(d) $\dfrac{2}{3} \pi r^3$

$\Large {\underline {\underline {\text {\maltese \: {\red {Solution :-}}}}}}$

For a Sphere of Radius r units, we have :

Volume, V of the Sphere = $\bold {\Big (\dfrac{4}{3} \pi r^3 \Big )\: cubic\: units}$

∴ Option A is the Right Answer . . .

$\Large {\underline {\underline {\text {\maltese \: {\red {Additional Information :-}}}}}}$

Surface Area of a Sphere = $\bold {(4 \pi r^2) \: sq. units}$

Objects like Football, Volleyball, Throw ball, etc ., are said to have the Shape of a Sphere.