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 one word among the following words cannot be formed with the letters of the word ‘CARPENTER’ ?
A diver rowing at the speed of 3 km/h in still water takes double the time going 50 km upstream compared to going 50 km downstream. The speed of the div...
In April 2023, what status has the Federal Aviation Administration granted to India's aviation security oversight?
Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and th...
In case of gold, revenue is recognized in the accounting period in which the gold is
X scored 40% marks in an exam whereas Y scored 320 marks in the same exam. If the score of Y is 160 marks more than that of X, then find the maximum mar...
The average marks of the students of a class in a particular exam is 80. If 5 students whose average marks in that exam is 40 are excluded, the average ...
Which day has been declared by the Government of India to be celebrated every year as "Parakram Diwas" ?
Which city is also called as Silver city of India?
Which one of the following is hardware?
