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### Geometry Surface Area of a Sphere - III

 Example: The surface area of a sphere is 154 Sq. cm. Find its radius. Solution: Given that, Volume of the sphere = 154 Sq. cm. i.e., 4 * pi * r2 = 154 r2 = 154 * 7/22 * 1/4 r2 = 1078/88 r2 = 12.25 r = 3.5 cm. Directions: Solve the following problems. Also write at least 5 examples of your own.

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