Question

The ratio of volume and total surface area of sphere of radius 5 cm​

Answer 1

Answer:

a

Step-by-step explanation

For a sphere, surface area is S= 4*Pi*R*R, where R is the radius of the sphere and Pi is 3.1415... The volume of a sphere is V= 4*Pi*R*R*R/3. So for a sphere, the ratio of surface area to volume is given by: S/V = 3/R.

Answer 2

Answer:

1.7

Step-by-step explanation:

first find the volume of sphere

We know that volume of sphere = 4/3 πr^3

substitute the value of r i.e r=5 in the formula

volume= 4/3 π 5^3

= 4/3 × 3.14 × 125

volume of sphere = 523.6 cm^3

find the surface area of sphere

We know that surface area of sphere= 4πr^2

substitute the value of r in the formula i.e

surface area of sphere = 4×π×5^2

= 4×3.14×25

surface area of sphere = 314.16 cm^2

for ratio divide volume by surface area

therefore, ratio = volume/surface area i.e

ratio = 523.6/314.16

ratio =1.7