Question

Find the surface area of a sphere with a diameter of 12 mm.

Answer 1

1809.5574 mm²

Explanation:

Input Data :

Length = 12 mm

Objective :

Find what is the surface area of the sphere for given input data?

Formula :

Surface Area = 4πr2

Solution :

Surface Area = 4 x 3.1416 x 122

= 4 x 3.1416 x 144

Surface Area = 1809.5574 mm²

Answer 2

A≈4.52×10-4m²

Explanation:

Unit Conversion:

d=0.012m

Using the formulas

A=4πr2

d=2r

Solving for A

A=πd2=π·0.0122≈4.52389×10-4m²