Interested to Buy Any Domain ? << Click Here >> for more details...
Radius of sphere is increased by 50%. By how much percentage
is surface area is increased?
- 13 Answers
- 47963 Views
- GD Goenka, Mascot, I also Faced
- E-Mail Answers
Answer Posted / arvind yeram
r1 = initial radius
r2 = final radius
s1 = 4πr1^2
s2 = 4πr2^2
r2 = 50/100r1+r1 = 3/2r1
s2 = 4π9/4r1^2
%increase = (9/4-1)*100
= 5/4*100
= 125
| Is This Answer Correct ? | 32 Yes | 16 No |
Post New Answer View All Answers
A is twice efficient than B. A and B can both work together to complete a work in 7 days. Then find in how many days A alone can complete the work?
A car has run 10000 miles using 5 tyres interchangably,To have a equal wornout by all tyres how many miles each tyre should have run. answer 4000 miles/tyre
in a market 4 man are standing .the average age of the four before 4 years is 45, after some days one man is added and his age is 49. What is the average age of all?
A shopkeeper bought a watch for Rs.400 and sold it for Rs.500.What is his profit percentage?
A soldier looses his way in a thick jungle at random walks from his camp but mathematically in an interesting fashion. First he walks one mile east then half mile to north. Then 1/4 mile to west, then 1/8 mile to south and so on making a loop. Finally hoe far he is from his camp and in which direction.
I want Canara Bank Question papers ? if u have this one send my mail. id - kuruba.sreekanth@gmail.com -regards
At 20% discount, a cycle is sold at a selling price of 2500 Rs. What is the actual price?
In Bangalore, during income tax deduction for a single person, the percentage increased by 3% and for middle house-holders, it decreased by 3%. What can you infer?
a man is 24 years older than his son. In two years, his age will be twice the age of his son. The present age of his son is?
4i+8j+10k. something like this.
A company manufactures x refrigerators cp.(9000+500x0 sp=500x; what must be the value of x so that atlas the amount gained After selling is equal to the amount spent on production
A 4" cube is painted in all its faces and then it is cut down into 1" blocks. How many 1" blocks are there even without a single face being painted?
Q.19 Alok and Bhanu play the following min-max game. Given the expression N=9+X+Y–Z where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be 27 18 20 Answer is: 20 can someone plzzzzzzzzz tell me how this answer is calculeted???
If two pencils cost 8 cents, then how much do 5 pencils cost?
Three years ago my uncle offered me a used keyboard for Rs. 1024. A year later he offered me the same for Rs. 640 and last year he wanted Rs. 400 and now he is willing to sell it to me for Rs. 250. But I have decided to buy it when he reduces the price next time. If he is constantly reducing its price, at what price will he offer the keyboard to me next?
