A. Read and solve each problem. Write your complete answer on the line. No. 1 is done for you 1. A sphere has a radius of 28 cm. What is its surface area? 9.847.04 cm2 2. An inflated balloon during the birthday party has a diameter of 27 cm. What is its surface area? 3. What is the surface area of a globe found in the library with the radius of 78.3 cm.? 4. A library has an aquarium in a shape of a sphere. What is the surface area if the radius is 30.6 cm? 5. A cosmetics company makes a small sphere to wrap a moisturizer before shipping. Find the surface area if the diameter is 7 cm? r = diameter 2
