Calculating Surface Area and Volume of Spheres

The video tutorial from Xcelerate Math explains how to calculate the surface area and volume of a sphere. It introduces the concepts with simple rules: the surface area is calculated using 4 Pi R-squared, and the volume is calculated using 4/3 Pi R-cubed. The tutorial provides a practical example with a sphere of radius 6 cm, demonstrating the calculations step-by-step. The surface area is found to be 452.16 cm², and the volume is 904.32 cm³. The video concludes by emphasizing the simplicity of these calculations.

What does the surface area of a sphere represent?

• The radius of the sphere

• The diameter of the sphere

• The area around the outside of the sphere

• The volume inside the sphere

How is the surface area of a sphere calculated?

• 2 Pi R-squared

• 4 Pi R-squared

• 4 Pi R-cubed

• 4/3 Pi R-squared

If the radius of a sphere is doubled, how does the surface area change?

• It increases by eight times

• It remains the same

• It quadruples

• It doubles

What is the formula for the volume of a sphere?

• 4/3 Pi R-cubed

• Pi R-squared

• 4 Pi R-squared

• 2/3 Pi R-cubed

What is the volume of a sphere with a radius of 6 centimeters?

• 113.04 cm^3

• 452.16 cm^3

• 904.32 cm^3

• 678.24 cm^3