Question

Find the volume and surface area of a sphere of radius 2.1cm (π = 22/7)

Answer 1

first put the things that given and then put the formula of volume of sphere and then put the pie value and then solve it

Answer 2

Answer:

Volume 38.808 cm³

Surface area 55.44 cm²

Step-by-step explanation:

We have to calculate the volume and surface area of a sphere having a radius 2.1 cm.

Now, the volume of a sphere is given by the formula 4/3 of πr³, where r is the only unknown and it is the radius of the sphere.

Hence, the required volume =4/3{π(2.1)³} =38.808 cm³. (Answer)

Again, 4πr² is the surface area of a sphere.

So, the required surface area is= 4π(2.1)² =55.44 cm². (Answer)