11.5 Surface area of Spheres

11.5 Surface area of Spheres

by Hanna Drakos

​Surface area of a sphere formula...

Multiple Choice

What is this formula?

• suface area of a cone

• surface area of a sphere

• volume of a cone

• volume of a sphere

Multiple Choice

Find the surface area when r=25cm. remember to look at the units!!!!

• 2500 cm²

• 2500 cm³

• 7850 cm²

• 7850 cm³

Multiple Choice

Find the surface area of the sphere.

• 6658.56 mm²

• 452.16 mm²

• 904.32 mm²

• 108.8 mm²

Multiple Choice

Find the surface area of the figure. Round your answer to the nearest hundredth. Use the formula:  $$SA=4\pi r^2$$  

• 706.86 $$m^2$$

• 2,826 $$m^2$$

• 353.43 $$m^2$$

• 176.63 $$m^2$$

Multiple Choice

Determine the surface area. Cut the diameter in half first.

• 314.16 km²

• 178.36 km²

• 400.31 km²

• 1256.64 km²