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:- Describe your work ethic.
Ques:- Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?
Ques:- there were 253 games played so that atleast two team from the group play each other. Find out the maximum no of team
Recent Answer : Added by Admin On 2020-05-17 12:02:20:
23 Teams
Ques:- A car is filled with 4.5 gallons of fuel for a round trip . Car is taken 1/4 more than in going than coming up. What is the fuel consumed in coming up ?
Recent Answer : Added by Admin On 2020-05-17 12:00:30:
Fuel to go = x + (x/4)=5x/4
Fuel to come = x
now,
x+(5x/4) = 4.5
9x/4 = 4.5
9x = 18
x = 2 (Fuel to comeup)
Fuel to go will be:
2+(2/4) = 2 + (0.5) = 2.5
Ques:- If $ stands for triple and # for negation, what is the value of #$#3-#5
Ques:- What skills do use when you need to influence the way other people think?
Ques:- If the perimeter of a rectangular garden is 600 m, its length when its breadth is 100 m is?
Ques:- What is your strenght and weeknesess.
Ques:- Raman ranks sixteenth from the top and forty ninth from the bottom in a class. How many students are there in the class ?
Ques:- Where was the capital of Kanishka?
A. Purushapura
B. Kannauj
C. Taxila
D. Kandhar
Ques:- Here is an interesting sequence.. 1 20 33 400 505 660 777 8000 9009 10100 11121 What are the next few numbers in the above sequence?
Ques:- How did your supervisor on your most recent job evaluate your job performance? What were some of the good points & bad points of that rating?
Ques:- Do you have any blind spots?
Ques:- Why you want to leave your present company?
Ques:- Rajan borrowed Rs.4000 at 5% p.a compound interest. After 2 years, he repaid Rs.2210 and after 2 more year, the balance with interest. What was the total amount that he paid as interest?
Recent Answer : Added by Karan Chavan On 2022-03-13 16:35:27:
Ans 635.5
4000
1 year 5 % 200 rs int
Total 4200
2 year 5 % 210 ra int
Total 4410
4410-2210 = 2200
1 year 5% 110
Total 2310
2 year 5 % 115.5 rs int
Total 2425.5
Total interest paid
200 +210+ 110+115.5. = 635.5
Ques:- A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?
Recent Answer : Added by Anonymous On 2021-08-14 13:06:13:
Let:
1. speed of boat in still water = x
2. speed of stream = y;
Then net speed of boat upstream = x – y = 16km / 4 h = 4kmph
Net speed of boat downstream = x + y = 16 / 2 = 8kmph
Now solve for x to get x = 6kmph in still water.
Ques:- Seven varsity basketball players A, B, C, D, E, F and G are to be honoured at a special luncheon. The players will be seated on the dais in a row. A and G have to leave the luncheon early and so must be seated at the extreme right. B will receive the most valuable player’s trophy and so much be in the centre to facilitate presentation. C and D are bitter rivals and therefore, must be seated as far apart as possible. Who among C,D,F,G cannot be seated at either end?
Recent Answer : Added by Surya Kamadi On 2021-03-17 16:57:48:
F
Ques:- There are 9 coins. 8 are of 1 gm and 1 is of 2 grams. How will you find out the heavier coin in minimum number of weighing and how many weighing it will need?
Ques:- If A is to the south of B and C is to the east of B, in what direction is A with respect to C?
Recent Answer : Added by Kuff On 2021-09-22 16:56:58:
South-West
Ques:- What is the difference between goal and ambition?
Ques:- How do you handle stress, pressure and anxiety?
Ques:- Tell us about ur-Qualification
Ques:- What format does Frozen represent?
Ques:- Do you have any experience?
Ques:- Old Man Wrinkle Man Wrinkle spent 1/4th of his life as a boy, 1/8th as a youth, and 1/2 as an active man. If Man Wrinkle spent 8 years as an old man, then how many years did he spend as an active man?
Recent Answer : Added by Emad Samy On 2021-09-14 15:42:00:
32
Solution:
life as a boy = 1/4
life as a youth = 1/8
life as an active man = 1/2
sum of life as boy, youth and active man = 1/4 + 1/8 + 1/2 = 7/8
life as an old man = 1 − 7/8 = 1/8
1/8 Wrinkle’s life (as an old man) is 8 years.
and 1/2 = 1/8 *4
So, 1/2 Wrinkle’s Age (as active man) = 8*4 = 32years.
Ques:- 1. All G’s are H’s 2. All G’s are J’s or K’s 3. All J’s and K’s are G’s 4. All L’s are K’s 5. All N’s are M’s 6. No M’s are G’s
Ques:- if 4 circles of equal radius are drawn with vertices of a square as the centre , the side of the square being 7 cm, find the area of the circles outside the square?
Recent Answer : Added by Uday On 2022-03-11 17:00:31:
190.85
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:
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.