Use π = 3.1 and give answers to 3 significant figures.
1. Find the volume and surface area of the following sphere, if r = 8 mm.
2. A sphere has a diameter 24.2 cm . What is its volume and surface area?
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For the following solid sphere, find: a. The volume. Give the answers in mm3 b. The surface area. Give the answers in m2
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4. Assuming the Earth is a sphere, with a diameter of 12,700 kilometres, find its approximate surface area. |
