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What is the area of a hollow cylinder with an outside diameter of 100mm and inside diameter of 30mm?
Wiki User
∙ 15y ago
Not clear which area you want. The surface area of the cylinder can only be determined if you give the length of the cylinder as well as its diameter. As you don't give this I conclude you want the area of the ends only. Each end will be the difference between the area of the 100 mm circle and the 30 mm circle.
100 mm diameter area = 7855 sq mm. 30 mm diameter area = 707 sq mm. Therefore area of end = 7148 sq mm, and you have two ends so total = 14296 sq mm
Wiki User
∙ 15y ago
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caliper
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