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 do you find yourself 2 years down the line from now?
Ques:- Mr. T has a wrong weighing pan. One arm is lengthier than other. 1 kilogram on left balances 8 melons on right. 1 kilogram on right balances 2 melons on left. If all melons are equal in weight,what is the weight of a single melon?
Recent Answer : Added by samarth khare On 2021-06-23 17:56:06:
Suppose the lengthier arm of weighing pan is of x cm and other arm is y cm .Also let weight if each melon be m kg.
so applying equilibrium of torque principles ,we get
case 1:-
1x-8my=0
case 2:-
2mx-1y=0
using case 1 equation , we substitute value of x into case 2 equation;
16mmy-1y=0
(16mm-1)y=0
y is length of weighing arm and cannot be 0,
therefore ,
16mm-1 =0
16mm=1
mm=1/16
m= square root (1/16)
m=+-1/4
m is weight of melon and cant be negative.
Hence m, weight of one melon is 1/4 kg
Ques:- Find the least number which when diminished by 7 is divisible by 21, 28, 36 and 45 ?
Recent Answer : Added by lalitha On 2021-12-04 15:02:04:
1267
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:- Find the value of ( 0.75 * 0.75 * 0.75 – 0.001 ) / ( 0.75 * 0.75 – 0.075 + 0.01)
A. 0.845
B. 2.312
C. 1.908
D. 0
E. 1
Ques:- A starts business with a capital of Rs.1200 B and C join with some investments after 3 and 6 months respectively. If the end of a year, the profit is divided in the ratio 2:3:5 respectively. What is B’s investment in the business?
Ques:- Describe some staff conflicts you have handled.
Ques:- Which of the following can be a product of two 3 digit numbers are **3 and **8?
A. 991014
B. 1010024
C. 9124
D. None of these
Recent Answer : Added by narendra On 2022-09-18 09:01:41:
a
Ques:- What are ActiveX Controls
Recent Answer : Added by Admin On 2020-05-17 12:04:04:
these components can be used to add specialized
functionality, such as animation or pop-up menus, to Web
pages, desktop applications, and software development tools.
Ques:- Education qualification
Ques:- A number when divided by the sum of 555 and 445 gives two times their difference as quotient and 30 as the remainder. The number is
A. 1220
B. 1250
C. 22030
D. 220030
Recent Answer : Added by Ayush On 2022-09-15 16:35:57:
Ques:- Find the least number with which 16200 should be multiplied, to make it a perfect cube.
Recent Answer : Added by Atif On 2022-12-05 16:13:24:
2
Ques:- A 16 stored building has 12000 sq.feet on each floor. Company A rents 7 floors and company B rents 4 floors. What is the number of sq.feet of unrented floor space.
Recent Answer : Added by Maddina Nikhil On 2021-08-09 17:01:43:
as total 16 floors out of them 11 were rented to A and B company .So remaining floors are 5 and each floor is 12000s.ft
So remaining = 12000*5
=60000
Ques:- if a car starts from A towards B with some velocity due to some problem in the engine afetr travelling 30 km .if the car goes 4/5 th of its of actual velociteythe car reaches B 45 min later to the actual time.if the car engine fails after travelling 45km the car reaches the destination B 36min late to the actual time ,wat is the initial velocity of car and what is the distance between A and B on km.
Recent Answer : Added by Admin On 2020-05-17 12:04:29:
20&130
Ques:- A cow is tethered in the middle of a field with a 14 feetlong rope. If the cow grazes 100 sq feet per dayapproximately. What time will be taken by the cow to grazethe grazeable area of the field?
Recent Answer : Added by Admin On 2020-05-17 12:03:41:
( d ) 6 days
Ques:- What are the factors in you to offer a job in NIIT?
Ques:- A survey of a village showed that 1 / 10 of the total population speak neither Hindi nor English. 1 / 5 of them cannot speak English and 3 / 7 of them cannot speak Hindi. What percentages of people know only one language?
Ques:- What you will be Good carrier
Ques:- If a person walks at 4/5th of his usual spee he reaches 40min late. If he walks athis usual speed how much time does he travels.
Recent Answer : Added by Admin On 2020-05-17 12:01:10:
let x=speed
t=time taken when speed is x so…
xt=4/5x(t+40)
t=160 minutes
2 hr 40 minutes
Ques:- The LCM of 148 and 185 is
A. 3700
B. 2960
C. 740
D. 680
Recent Answer : Added by R.Geethanjali On 2022-04-02 06:59:22:
740
Ques:- Under which writs the Courts sought to produce a person in the court suspected to be missing or in custody?
Recent Answer : Added by Mohammed Riyas On 2023-07-01 06:13:09:
habeas corpus
Ques:- In 1978, a kg of paper was sold at Rs25/-. I f the paper rate increases at 1.5% more than inflation rate which is of 6.5% a year , then what wil be the cost of a kg of paper after 2 years? a)29.12 (b) 29.72 (c) 30.12 (d) 32.65 (e) none of these
Recent Answer : Added by Admin On 2020-05-17 12:00:04:
(a) 29.12 (actual)
first year rate of paper (inflation rate) : 25 + 25 *
6.5/100 = 26.625
paper rate in first year is 1.5 % more . ..thr4
inflated cost in 1 yr = 26.625 + 1.5 / 100 * 26.625 =
27.024.
second year : 27.024 + 27.024 * 6.5 / 100 = 28.78
paper cost : 1.5 /100 * 28.78 + 28.78 = 29.12 ( approx..)
Ques:- 343 : 729 :: 125 : __
Recent Answer : Added by Sunil Kumar On 2022-08-14 16:25:38:
343 : 729 :: 125 : ?
7^3 : 9^3 :: 5^3:7^3
Ques:- Rs.2500 is divided into two parts such that if one part be put out at 5% simple interest and the other at 6%, the yearly annual income may be Rs.140. How much was lent at 5%?
Recent Answer : Added by Rauf Cyclewala On 2021-05-09 06:06:24:
1000
Ques:- In town of 500 people, 285 read Hindu and 212 read Indian express and 127read Times of India 20 read hindu and times of India and 29 read hindu and Indian express and 35 read times of India and Indian express. 50 read no news paper. Then how many read all the three paper?
Recent Answer : Added by Admin On 2020-05-17 12:02:15:
500 = Total+50
Total(450) = only one paper(p) + 29+20+35 + all three (g)
285+212+127 = p + 2( 29+20+35 )+ 3g
solve above .. to get g = 45 …
( small corrctn .. i think .. questn shud be 20 read ONLY
hindu and
times of India and 29 read ONLY hindu and Indian express
and 35
read ONLY times of India and Indian express)
Ques:- What is sales and marketing?
Ques:- Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?
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.