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Diameter of a hemispherical toy is 56 cm find its curved surface area, total surface area and volume. |
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Answer» Diameter of hemisphere = 56 cm Its radius = d/2 = 56/2 Radius = 28 cm T. S. A of hemisphere = 3πr2 = 3 × 22/7 × 28 × 28 = 7392 cm2 C. S. A of hemisphere = 2πr2 = 2 × 22/7 × 28 × 28 = 4928 cm2 Volume of hemisphere = 2/3 πr2 = 2/3 × 22/7 × 28 × 28 × 28 = 45994.666 cm3 |
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