Question
The cross sectional area of a hemisphere is 2772 cm²
and its volume is 19404 cm³. What is its radius?Solution
As we know, Volume of hemisphere = (2/3) πr3 (2/3) πr³ = 19404 --- (1) The curved surface area of the hemisphere = 2 πr² 2 πr² = 2772      …  (2) Dividing (1) by (2),  [(2/3) πr³]/ [2 πr²] = 19404/2772  r/3 = 7 r = 21 cm
Which option represents the correct order of the given words as they would appear in the English dictionary?
1. Sailboat
2. Saint
3...
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
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In the following question, select the related letter pair from the given alternatives.Â
ER : ET :: ?Â
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
Figure X is followed by four figures numbered (1), (2), (3), (4). Identify the figure among the four in which figure X is embedded (i.e. contains figure...
