Could anyone explain how to do this?
A box with a square base and no top is to be made from a square piece of carboard by cutting 5 in. squares from each corner and folding up the sides. The box is to hold 9245 in3. How big a piece of cardboard is needed?
I think I've got the basics.. but I'm getting wrong answers..
and also,
You have a wire that is 68 cm long. You wish to cut it into two pieces. One piece will be bent into the shape of a square. The other piece will be bent into the shape of a circle. Let A represent the total area of the square and the circle. What is the circumference of the circle when A is a minimum?
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