Question
If the diameter of the base of a cone is 70 cm and its
curved surface area is 4070 cm², then what will be its volume (in cm³)? (use π = 22/7)Solution
Curved surface area = 1395 cm² πrl = (4070) (22/7) x 35 x 1 = 4070 1= (4070 × 7)/ (35 x 22) l= 814/22 1 =37 h2 = 12-r2 h = (37)2 - (35)2 h=√1369-1225 h = √144 h = 12 cm Volume of cone = (1/3) x π x r² x h = (1/3) x (22/7) × (35)2 x 12 =22×175×4 cm³ =15400
What will come in place of the question mark (?) in the following series?
1528, 1416, 1204, ?, 480, -32
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
96 89 ? 90 94 91
...What value should come in the place of (?) in the following number series?
19, 235, 260, 324, 333, ?
What will come in place of the question mark (?) in the following series?
305...
In each of the following number series, one term is missing. Find the missing term.
3, 5, 20, 24, 144, 150, ?
1029, 1030, 1039, 1064, ?, 1194
75, 80, 95, ?, 155, 200
What will come in place of the question mark (?) in the following series?
1515, 184, ?, 455, 967, 624
7 29 61 ? 211 349
...
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