Find the volume and surface area of a sphere whose radius is: (i) 3.5 cm (ii) 4.2 cm (iii) 5 cm

Correct Answer - `1.08xx10^(6)V,1.08xx10^(6)V`

Correct Answer - 36 kV, 3kV, 6kV

Correct Answer - ` 4500 pi cm^(3)`

Correct Answer - (i) `432 cm^(3), 180 cm^(2), 372 cm^(2)` (ii) `2366 m^(3), 520m^(2), 1248 m^(2)` (iii) `45 m^(3), 21 m^(2), 201 m^(2)` (iv) `36m^(3), 291 m^(2), 303 m^(2)`

Correct Answer - `269.5 cm^(3)`

Correct Answer - `1078 cm^(3)`

Correct option is  D)R/n – 1

Volume of the sphere = \(\Large \frac{4}{3} \pi r^{3}\ cm^{3} \) Surface area of sphere = \(\Large 4 \pi r^{2}\ cm^{2}\) The volume of the sphere and the surface area of the sphere are numerically...

Correct option is (B) 4π r = 1 unit Surface area of sphere \(=4\pi r^2\) \(=4\pi\times1^2=4\pi\) square units