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
- 48312 Views
- GD Goenka, Mascot, I also Faced
- E-Mail Answers
Answer Posted / aditi joshi
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.
| Is This Answer Correct ? | 64 Yes | 17 No |
Post New Answer View All Answers
A man buys 12 lts of liquid which contains 20% of the liquid and the rest is water. He then mixes it with 10 lts of another mixture with 30% of liquid.What is the % of water in the new mixture?
sir plz send the rrb exam question papers my emailid is abhilasha.bollepalli@gmail.com
A vegetable seller sells his vegetables at the rate of Rs. 9 kg and thereby incurs a loss of 20%. If he had to make a profit of 5%, at what price per Kg should he sell his vegetables?
A gardener plants 100 meters towards east, next 100 meters towards north,next 100 meters towards west. 98 meters towards east, 96 meters towards north and 96 meters towards west, 94 towards west. 98 meters towards east, 96 meters towards north and 96 meters towards west, 94 meters towards south. and 94 meters towards east and so on. If a person walks between the trees what is the total distance travelled by him before he reaches the center.
one man or two women or three boys can do a work in 44 days then one man, one women and one boy together can fininsh the same work in ---- days
'X' liters of petrol can be filled in an automobiles tank. What part of full tank was removed, if 'Y' liters was removed when the tank was full?
Why do you want to join gnfc
Some work is done by two people in 24 minutes. One of them can do this work alone in 40 minutes. How much time does the second person take to do the same work ?
A sum of money doubles itself in 4 years at simple interest, in how many years, it would become 7 times of itself?
a person who decided to go weekend trip should not exceed 8 hours driving in a day average speed of forward journey is 40 mph.due to traffic in sun days the return journey average speed is 30 mph.how far he can select a picnic spot.
A person starts walking at a speed of 5km/hr through half the distance, rest of the distance he covers with a speed 4km/hr. Total time of travel is 9 hours. What is the maximum distance he can cover?
In geometry, polygons with up to twelve sides have different given names; however, ______________________ if the number of sides is higher than twelve, the polygon is named by placing the suffix "gon" after the number of sides in the polygons. if the number of sides is greater than twelve, the polygon is named by placing the suffix "gon" after the number of sides in the polygons. if the number of sides is greater than twelve, name the polygon by placing the suffix "gon" after the number of sides in the polygons. if the number of sides is higher than twelve, name the polygon by placing the suffix "gon" after the number of sides in the polygons.
Find the unit digit of product of the prime number up to 50 ?
Name of the cipla medicine product
A man shows his friend a woman sitting in a park and says that she the daughter of my grandmother's only son. What is the relation between the two
