Ques:- Radius of sphere is increased by 50%. By how much percentage is surface area is increased?
Recent Answer : Added by Admin On 2020-05-17 11:59:36:
let original radius=100
original surface area lets say it x =4 * (22/7) * 100 *100
new radius=100 + 50% of 100=150
new surface area lets say it y = 4 * (22/7)* 150* 150
increase in surface area=((y-x)/x) * 100
i.e.
((4*(22/7)*150*150 – 4*(22/7)*100 *100) / (4*(22/7)*100*100))*100
=125
so the answer is 125%.
hope this helps you.
Ques:- Where would you like to stand after a period of 5 years?
Ques:- Which one of the following numbers is divisible by 3?
A. 2345678
B. 2876423
C. 4006020
D. 9566003
Recent Answer : Added by Ramyadevi On 2021-10-22 09:13:10:
The correct ANS: option C
Ques:- Information regarding family members
Ques:- A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze?
Recent Answer : Added by anit On 2021-10-08 16:31:41:
1208.9
Ques:- By what % New price of wardrobe has to be increased to get original value, if it was decreased by 20%
Ques:- Find the area not occupied by circles: Given length =y breadth =x
Recent Answer : Added by Admin On 2020-05-17 12:02:10:
(1/2)*x*y
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Ques:- In a company 3/5 of people know shorthand 1/4th know typing and 1/5 know both. What fraction of people do not know both?
Recent Answer : Added by Admin On 2020-05-17 11:59:27:
4/5
Ques:- January 1, 1992 was Wednesday. What day of the week was January 1, 1993?
A. Monday
B. Tuesday
C. Thursday
D. Friday
Recent Answer : Added by Sunil On 2022-12-20 12:54:08:
Friday
Ques:- Else everything was related to personal
Ques:- Find out the wrong number in a given series.
263, 284, 393, 481, 482
A. 482
B. 481
C. 393
D. 284
Recent Answer : Added by Gifty Samoliane Asiedu On 2022-08-14 16:42:37:
B
Ques:- Complete the series: 2, 5, 9, 19, 37, ……
A. 72
B. 74
C. 75
D. 76
Recent Answer : Added by PRASHANT YADAV On 2022-09-28 17:42:49:
75
Ques:- The sum of the square of the three consecutive even natural numbers is 1460. Evaluate the numbers?
Recent Answer : Added by shraddha On 2022-05-17 09:06:40:
let square be x (squares are 4 sides)
i.e., X+X+X+X=4X
4X+3=1460
4X=1460-3
4X=1457
X=364.25
Ques:- Two trains move in the same direction at 50 kmph and 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes by him. What is the length of faster train ?
Ques:- ASKED ABOUT FAMILY BACKGROUND
Ques:- A reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:24:
Answer: 40
Explanation:
800*(25/100) = 200 —- 5
? —- 1 => Rs.40
Ques:- How long does a train 165 meters long running at the rate of 54 kmph take to cross a bridge 660 meters in length?
Recent Answer : Added by Nayana On 2022-09-23 18:07:00:
Speed of train = 54km/hr
= 54 x (5/18) m/s
= 15 m/s
Length of train = 165m
Time required to cross a bridge of 660m in length = (660+165) / 15
= 55 seconds
Ques:- What is the amount of pf and esi for employee to deducted ?
Ques:- How many kg of sugar costing Rs. 11.70/kg must be mixed with 24 kg of sugar costing Rs. 8.1/kg. So that there may be a gain of 15% by selling the mixture at 9/kg?
A. 6 kg
B. 7 kg
C. 8 kg
D. 10 kg
Recent Answer : Added by Admin On 2022-09-23 19:17:07:
C. 8 kg
Ques:- The H.C.F. and L.C.M. of two numbers are 12 and 336 respectively. If one of the numbers is 84, the other is
A. 24
B. 36
C. 48
D. 72
Recent Answer : Added by anonymous On 2022-03-09 16:38:02:
12*336/84=48
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Ques:- A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good?
Recent Answer : Added by jose On 2022-01-08 16:06:39:
4/9
Ques:- The length of the rectangular field is double its width. Inside the field there is square shaped pond 8m long. If the area of the pond is 1/8 of the area of the field. What is the length of the field?
Recent Answer : Added by ramathota madhu On 2022-03-09 16:36:28:
w, l=2w , area of square =8^2 = 64
area of rectangle = l*b
so w*2w = 8*64
w=16
length = 32
Ques:- Complete the series 196 : 256 :: 324 : __
Recent Answer : Added by Shakshi Shah On 2021-08-04 15:53:51:
Answer is 400.(14^2=196, 16^2=256, 18^2=324, 20^2=400.)
Ques:- In a queue, Vijay is fourteenth from the front and Jack is seventeenth from the end, while Mary is in between Vijay and Jack. If Vijay be ahead of Jack and there be 48 persons in the queue, how many persons are there between Vijay and Mary ?
Recent Answer : Added by S pushpa On 2021-06-17 10:44:17:
Number of persons between Vijay and Jack = 48 – (14 + 17) = 17.
Now, Mary lies in middle of these 17 persons i.e. at the eight position.
So, number of persons between Viji and mary = 7.
Ques:- What do you worry about?
Ques:- Which of the following will be the changed form of the word OBLIQUE when the word is written again by substituting each vowel by the 2nd letter following it in the English alphabet and substituting each consonant by the 3rd letter following it in the English alphabet? (1) MEDGTSD (2) RDNLSXH (3) QEOKTXG (4) QEOKTWG (5) None of these
Recent Answer : Added by SUNIL KUMAR MODI On 2021-08-17 14:47:48:
let original radius=100
original surface area lets say it x =4 * (22/7) * 100 *100
new radius=100 + 50% of 100=150
new surface area lets say it y = 4 * (22/7)* 150* 150
increase in surface area=((y-x)/x) * 100
i.e.
((4*(22/7)*150*150 – 4*(22/7)*100 *100) / (4*(22/7)*100*100))*100
=125
so the answer is 125%.
hope this helps you.