Question
If the volume of a cylinder is 196π and the ratio of
radius to its height is 7:4 then find the curved surface area of cylinder?Solution
Volume of cylinder = 196π ⇒ πr2h = 196π ⇒ r2h = 196 units ⇒ 49x2*4x = 196 units ⇒ x3 = 1 ⇒ x = 1 Radius = 7 units & height = 4 units. Curved surface area = 2πrh Curved surface area = 56π unit ²
A-5,  A,  35,  52, 78, 115
Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
15, 34, 13, 32, 11, 28
134, 138, 132, 142, 126, 146, 122
132, 148, 196, 340, 762, 2068
88, 112, 78, 120, 64, 136
- Find the wrong number in the given number series.
4, 6, 9, 13, 18, 25 4, 11, 36, 164, 986, 7204
In each of the following giving number series, a wrong number is given. Find out the wrong number?
46 23 23 34.5 70 172.5
...- Find the wrong number in the series.
2, 3, 7, 15, 31, 63, 127