BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

geometry 3

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 am
Thanked: 32 times
Followed by:3 members

geometry 3

by Gurpinder » Sat Sep 18, 2010 8:46 am
Image

for the crate, how do you know which side is the length and which one is the width.

the answer = 5

so the dia of tank = 10. now if the crate is 8x10 where 8 is the width, the tank would not fit because the diameter is 10!!! right??????

Thx.
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 1560
Joined: Tue Nov 17, 2009 2:38 am
Thanked: 137 times
Followed by:5 members

by thephoenix » Sat Sep 18, 2010 9:03 am
we are asked to find out the maximum volume of tank
with given parameters we can have
1)8as dia , and 10 and 12 as ht.
or 2) 10 as dia and 8 and 12 as ht
for 1 vol. of tank will be 16pi*10 or 16pi*12
for 2nd it will be 25pi*8 or 25pi*12
maximum vol is when dia is 10 and ht 12
so radius is 5
Many of the great achievements of the world were accomplished by tired and discouraged men who kept on working
Top
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 am
Thanked: 32 times
Followed by:3 members

by Gurpinder » Sat Sep 18, 2010 9:26 am
thephoenix wrote:we are asked to find out the maximum volume of tank
with given parameters we can have
1)8as dia , and 10 and 12 as ht.
or 2) 10 as dia and 8 and 12 as ht
for 1 vol. of tank will be 16pi*10 or 16pi*12
for 2nd it will be 25pi*8 or 25pi*12
maximum vol is when dia is 10 and ht 12
so radius is 5
makes sense.

thx buddy!
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
User avatar
Legendary Member
Posts: 866
Joined: Mon Aug 02, 2010 6:46 pm
Location: Gwalior, India
Thanked: 31 times

by goyalsau » Sun Sep 19, 2010 8:22 am
thephoenix wrote:we are asked to find out the maximum volume of tank
with given parameters we can have
1)8as dia , and 10 and 12 as ht.
or 2) 10 as dia and 8 and 12 as ht
for 1 vol. of tank will be 16pi*10 or 16pi*12
for 2nd it will be 25pi*8 or 25pi*12
maximum vol is when dia is 10 and ht 12
so radius is 5
why not 12 as diameter..
Top
User avatar
Legendary Member
Posts: 659
Joined: Mon Dec 14, 2009 8:12 am
Thanked: 32 times
Followed by:3 members

by Gurpinder » Sun Sep 19, 2010 8:25 am
goyalsau wrote:
why not 12 as diameter..
if you do the calculation, you will see that you get the biggest volume of the tank when diameter = 10.
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
Top
User avatar
Legendary Member
Posts: 866
Joined: Mon Aug 02, 2010 6:46 pm
Location: Gwalior, India
Thanked: 31 times

by goyalsau » Sun Sep 19, 2010 8:31 am
I got it,
with 12 as diameter it not possible to put a cylinder in a box of 8,10 as other sides.
thanks for your comments.
Top
Post new topic Post Reply
• Page 1 of 1