exam Maths Puzzle Numerical Ability

A conical shaped container is made from a circular piece of paper. It has a base radius of 9cm and a height of 12cm. What is the circumference of the original circle in centimatres?

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Justin has already saved $40 and wants to buy a playstation 2 for $129 about four months from now. To find how much he should save each week between now and then, he wrote 40+16x=129. Explain this equation. On a standard die, the dots on the opposite faces have a sum of 7. How many different sums of dots on three adjacent faces are there on this standard die?