How do you find the surface area of a sphere

The video tutorial explains how to calculate the surface area of a sphere using the formula 4πR². It begins by introducing the concept and formula, then explains the relationship between diameter and radius. The tutorial proceeds with a step-by-step calculation using a given radius, and concludes with finalizing the calculation and clarifying the units used.

What is the formula for finding the surface area of a sphere?

• 4 * π * R^2

• 4 * π * R

• π * R^2

• 2 * π * R^2

How is the radius of a sphere related to its diameter?

• The radius is half the diameter.

• The radius is twice the diameter.

• The radius is three times the diameter.

• The radius is equal to the diameter.

If the diameter of a sphere is 10, what is the radius?

• 2

• 5

• 10

• 20

What is the surface area of a sphere with a radius of 5?

• 314.15π

• 314.15

• 100π

• 100

In what units is the surface area of a sphere expressed?

• Meters

• Square millimeters

• Millimeters

• Cubic millimeters