Surface Area of Spheres Worksheet

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

• 2πr²

• 4πr²

• πr²

• 6πr²

If a sphere has a radius of 3 cm, what is its surface area in terms of π?

• 9π cm²

• 18π cm²

• 36π cm²

• 27π cm²

If a sphere has a radius of 12 cm, what is its surface area in terms of π?

• 48π cm²

• 144π cm²

• 576π cm²

• 288π cm²

If a sphere has a radius of 5 cm, what is its surface area in terms of π?

• 25π cm²

• 50π cm²

• 100π cm²

• 75π cm²

What is the main question being explored in the lesson?

• How to find the area of a rectangle

• How to find the volume of a cone

• How to find the perimeter of a triangle

• How to find the circumference of a circle

What is the formula for the surface area of a cone?

• πrl + πr²

• 2πr²h

• πr²h

• πr² + 2πrh

In the formula for the surface area of a cone, what does the variable "l" represent?

• The slant height of the cone

• The radius of the base

• The height from base to apex

• The diameter of the base

If a cone has a radius (r) of 5 cm and a slant height (l) of 12 cm, what is its surface area to two decimal places?

• 267.04 cm²

• 314.16 cm²

• 188.40 cm²

• 452.39 cm²

If a cone has a radius (r) of 8 cm and a slant height (l) of 14 cm, what is its surface area to two decimal places?

• 552.92 cm²

• 314.16 cm²

• 267.04 cm²

• 452.39 cm²

What is the shape of the base of a cone?

• Circular

• Square

• Triangular

• Rectangular