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Let radius of the base of the cylinder = ‘r’ cm Area of the base of a cylinder = π × r2 So, (22/7) × r2 = 346.5 Or, r2 = 110.25 Or, r = 10.5 (Since, radius cannot be negative therefore we will take the positive root only) Let height of the cylinder = ‘h’ cm Now, the curved surface area cylinder = 2πrh So, 2 × (22/7) × 10.5 × h = 990 Or, h = (990/66) = 15 So, height of the cylinder = 15 cm
A basket contains 3 pink, 4 blue and 5 yellow wools. If three wools are picked at random, what is the probability that either all are blue or either all...
In a container, there are (x + 4) red balls, ‘x’ blue balls, and (x + 5) black balls. If the probability of picking two blue balls at random is (1/3...
Atul and Bhuvan play a game where each is asked to select a number from 1 to 9. If the two numbers same, both win a prize. The probability that they wil...
What is the probability that the cards drawn contains 1 red card, 1 purple card and 1 yellow card?
A vessel contains 5 red, ‘x’ green and 3 blue ribbons. If two ribbons are drawn from the vessel randomly, then the probability of getting a red and ...
If A and B are any two events such that P (A) + P (B) − P (A ∩ B) = P (A), then
A bag contains 12 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, fin...
30 pens are there in a box where 9 are red pens, ‘p’ are blue pens and remaining are black pens. If a pen is picked, the probability of getting blue...
22 rotten bananas are accidentally mixed with 136 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
R goes to the gym either by cycle, car, or walking. On a specific day, the probability of him going by car is 0.3 less than the probability of walking a...
