Surface Area of Spheres Quiz

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

• 2πr²

• πr²

• 4πr²

• 4πr

If the radius of a sphere is 3 feet, what is the surface area rounded to the nearest tenth?

• 113.1 feet²

• 100.2 feet²

• 120.5 feet²

• 110.9 feet²

How do you find the radius if the diameter of a sphere is given?

• Multiply the diameter by 2

• Divide the diameter by 2

• Square the diameter

• Subtract 2 from the diameter

What is the surface area of a sphere with a diameter of 15.6 inches?

• 750.1 inches²

• 800.2 inches²

• 700.3 inches²

• 764.5 inches²

How do you calculate the surface area of a sphere if only the diameter is provided?

• Square the diameter and multiply by 4π

• Multiply the diameter by π

• Convert the diameter to radius and then use the formula

• Use the diameter directly in the formula

If a sphere has a radius of 7 centimeters, what is its surface area?

• 610.7 cm²

• 615.8 cm²

• 600.5 cm²

• 620.3 cm²

What is the surface area of a sphere with a radius of 8 inches?

• 804.2 inches²

• 810.5 inches²

• 800.3 inches²

• 820.7 inches²

What is the surface area of a sphere with a radius of 10 miles?

• 1256.6 miles²

• 1300.5 miles²

• 1200.4 miles²

• 1280.7 miles²

If a sphere has a diameter of 6.2 inches, what is its surface area?

• 120.8 inches²

• 130.5 inches²

• 110.4 inches²

• 125.7 inches²

What is the surface area of a sphere with a radius of 10 miles, rounded to the nearest tenth?

• 1256.6 miles²

• 1300.5 miles²

• 1200.4 miles²

• 1280.7 miles²