rabbani (tar547) – Homework11 – Fouli – (58395)
1
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13
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001
10.0 points
Find the positive number such that the
sum of 3 times this number and 7 times its
reciprocal is as small as possible.
002
10.0 points
The canvas wind shelter
is to be constructed for use on Padre Island
beaches.
It is to have a back, two square
sides, and a top.
If
75
2
square feet of canvas
are available, find the depth of the shelter for
which the space inside is maximized assuming
all the canvas is used.
1.
depth = 3 feet
2.
depth =
5
2
feet
3.
depth =
5
4
feet
4.
none of these
5.
depth = 5 feet
003
10.0 points
A right circular cylinder is inscribed in a
sphere of diameter 10 cms as shown in
10
If the cylinder is open at both ends, find the
largest possible surface area of the cylinder.
1.
max area = 50
π
sq. cms
2.
max area = 100
π
sq. cms
3.
max area = 50 sq. cms
4.
max area =
25
2
sq. cms
5.
max area = 25 sq. cms
6.
max area =
25
2
π
sq. cms
7.
max area = 100 sq. cms
8.
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 Fall '08
 JOUVE
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