Question

find the volume and surface area of asphere of radius 2.1​

Answer 1

QUESTION:

find the volume and surface area of asphere of radius 2.1.

ANSWER:

FORMULA USED :

volume of sphere =

$\frac{4}{3} \times \pi \times {radius}^{3}$

surface area of sphere =

$4 \times \pi \times {radius}^{2}$

given :

radius = 2.1 CM.

VOLUME =

$\frac{4}{3} \times \frac{22}{7} \times {2.1}^{3} {cm}^{3} \\ 38.808 {cm}^{3}$

surface area

$4 \times \frac{22}{7} \times {2.1}^{2} \\ 55.44 {cm}^{2}$

PLZ MARK AS BRAINLIEST

Answer 2

Volume of a sphere = 4/3 π r^(3)

r = 2.1

Volume = 4/3 π ×2.1^(3)

= 4/3 π ×9.261

= 12.348π

Surface area of a sphere = 4π r^(2)

r = 2.1

Surface area = 4π× 2.1^(2)

= 4π× 4.41

= 17.64 π

Hope this will help....