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Let the radius of the sphere and the cone be 'r' cm, and the slant height of the cone be 'l' cm. Total surface area of cone = πrl + πr2 Total surface area of sphere = 4πr2 ATQ; 2 X 4πr2 = πr(l + r) Or, 8r = l + r So, 7r = 'l' Volume of sphere = (4/3) πr3 ATQ; 2304π = (4/3) X π X r3 So, 1728 = r3 So, 'r' = 12 cm So, slant height cone = 7r = 7 x 12 = 84 cm
5, 5, 15, 75, ?, 4725
8, 24, 48, 80, ?, 168
8 13 36 123 ? 2585
250, 279, 311, 349, 396, ?
840, 2520, 630, 3150, ?, 3675
12, 24, 46, 78, 120, ?
81, 41, 42, 64.5, ?, 330
8, 58, 75, 94, 115, ?
200 ? 96 38.4 7.68 0