# Surface Area of Spheres Exercises

### Example 1

If the diameter of a baseball is 3 inches, what is its surface area?

### Example 2

The surface area of the average basketball is about 277.6 square inches. Find the radius of the basketball.

### Example 3

Find the surface area of the solid.

### Example 4

The "Bigger is Better" Ice Cream Company has made an even better ice cream cone, with a hemispherical waffle socket for the ice cream. What could be better than waffle sockets? How much waffle do they need to make these new-and-improved ice cream cones for the Super Duper Ice Cream Scooper?

### Example 5

The average diameter of the earth is about 7913 miles. Using this measurement and assuming that the earth is perfectly spherical, what is its surface area in square miles?

### Example 6

Find the surface area of the sphere.

### Example 7

Which has a larger surface area: a cubic watermelon with 1-foot-long edges or a spherical watermelon with a diameter of 1.5 feet?