1. We want to construct a window whose bottom is a rectangle
and the top of the window is an equilateral triangle. If we have 75 inches of framing material what
are the dimensions of the window that will let in the most light?
2. We want to construct a window whose middle is a rectangle
and the top and bottom of the window are equilateral triangles. If we have 4 feet of framing material what
are the dimensions of the window that will let in the most light?
3. We want to construct a window whose middle is a
rectangle, the top of the window is a semicircle and the bottom of the window
is an equilateral triangle. If we have
1500 cm of framing material what are the dimensions of the window that will let
in the most light?
4. Determine the area of the largest rectangle that can be inscribed
in a circle of radius 5.
5. Determine the area of the largest rectangle whose base is
on the x-axis and the top two corners
lie on semicircle of radius 16.
6. Determine the area of the largest rectangle whose base is
on the x-axis and the top two corners
lie 
.
7. Find the point(s) on that are closest to .
8. Find the point(s) on that are closest to .
9. Find the point(s) on that are closest to .
10. A 6 ft piece of wire is cut into two pieces. One piece is bent into an equilateral
triangle and the other will be bent into a rectangle with one side twice the
length of the other side. Determine
where, if anywhere, the wire should be cut to minimize the area enclosed by the
two figures.
11. A 250 cm piece of wire is cut into two pieces. One piece is bent into an equilateral
triangle and the other will be bent into circle. Determine where, if anywhere, the wire should
be cut to maximize the area enclosed by the two figures.
12. A 250 cm piece of wire is cut into two pieces. One piece is bent into an equilateral
triangle and the other will be bent into circle. Determine where, if anywhere, the wire should
be cut to minimize the area enclosed by the two figures.
13. A 4 m piece of wire is cut into two pieces. One piece is bent into a circle and the other
will be bent into a rectangle with one side three times the length of the other
side. Determine where, if anywhere, the
wire should be cut to maximize the area enclosed by the two figures.
14. A line through the point forms a right triangle with the x-axis and y-axis in the 2nd quadrant. Determine the equation of the line that will
minimize the area of this triangle.
15. A line through the point forms a right triangle with the x-axis and y-axis in the 1st
quadrant. Determine the equation
of the line that will minimize the area of this triangle.
16. A piece of pipe is being carried down a hallway that is
14 feet wide. At the end of the hallway
there is a right-angled turn and the hallway narrows down to 6 feet wide. What is the longest pipe (always keeping it
horizontal) that can be carried around the turn in the hallway?
17. A piece of pipe is being carried down a hallway that is
9 feet wide. At the end of the hallway
there is a right-angled turn and the hallway widens up to 21 feet wide. What is the longest pipe (always keeping it
horizontal) that can be carried around the turn in the hallway?
18. Two poles, one 15 meters tall and one 10 meters tall,
are 40 meters apart. A length of wire is
attached to the top of each pole and it is staked to the ground somewhere
between the two poles. Where should the
wire be staked so that the minimum amount of wire is used?
19. Two poles, one 2 feet tall and one 5 feet tall, are 3
feet apart. A length of wire is attached
to the top of each pole and it is staked to the ground somewhere between the
two poles. Where should the wire be
staked so that the minimum amount of wire is used.?
20. Two poles, one 15 meters tall and one 10 meters tall, are
40 meters apart. A length of wire is
attached to the top of each pole and it is staked to the ground somewhere
between the two poles. Where should the
wire be staked so that the angle formed by the two pieces of wire at the stake
is a maximum?
21. Two poles, one 34 inches tall and one 17 inches tall,
are 3 feet apart. A length of wire is
attached to the top of each pole and it is staked to the ground somewhere
between the two poles. Where should the
wire be staked so that the angle formed by the two pieces of wire at the stake
is a maximum?
22. A trough for holding water is to be formed as shown in
the figure below. Determine the angle that will maximize the amount of water that
the trough can hold.
23. A trough for holding water is to be formed as shown in
the figure below. Determine the angle that will maximize the amount of water that
the trough can hold.
