2) A piece of paper for a poster contains 1000 cm^2. The margins at the top and bottom are 9cm and the side margins are 6 cm. What are the dimensions of the sheet if the printed area is to be a maximum.
Answers 2root3 and 3root3
3) At 9am ship B was 65km due east of ship A. Ship B was then sailing west at 10km/h and A was sailing south at 15km/h. When will they be nearest each other , and how near
Answer 11 am , 15root13
4) A cylindrical container is to hold 64 cm^3. Find the dimensions for minimum surface area when the container
A) is an open cup
B) is a closed can
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