Surface Area of Cylinders, Cones & Spheres

Find the surface area of the cone. Use 3.14 for π and round your answer to the nearest tenth, if necessary.

• 501.98 in^2
• 109.8 in^2
• 879.2 in^2

• 78.5 in^2

Find the surface area of the sphere. Use 3.14 for π and round your answer to the nearest tenth, if necessary.

• The correct answer for the surface area of the sphere is 1808.6 square units.

• The surface area of the sphere is 157.0 square units.
• The surface area of the sphere is 628.0 square units.
• The surface area of the sphere is 78.5 square units.

Find the surface area of the cylinder. Use 3.14 for π and round your answer to the nearest tenth, if necessary.

• 103.8 square inches
• 36.75 square inches
• 415.2 square inches
• 549.5 square inches

Find the surface area of the cone. Use 3.14 for π and round your answer to the nearest tenth, if necessary.

Find the surface area of a sphere that has a diameter of 25 m. Use 3.14 for π.

• 785 m^2
• 1256 m^2
• 314 m^2
• 1962.5 m^2

The surface area of this figure is 967.12 yd². Find the height. Use 3.14 for π.

• The height of the figure is 5.5 yards.
• The height of the figure is 15.0 yards.

• The height of the figure is 8.0 yards.
• The height of the figure is 6.5 yards.

The surface area of this figure is 1243.44ft². Find the slant height.

• The slant height is approximately 25.0 ft.
• The slant height is approximately 15.5 ft.
• The slant height is approximately 20.02 ft.
• The slant height is approximately 30.0 ft.

The surface area of this figure is 907.46 in². Find the diameter.

• The diameter is 10 inches.
• The diameter is 30 inches.
• The diameter is 17 inches.
• The diameter is 25 inches.

Find the surface area of the cone.

Wilmer is wrapping a stack of 100 pennies. Each penny is 1.65 mm thick and has a diameter of 19 mm. How many square millimeters of paper will Wilmer need to cover the stack of coins?