exam Maths Puzzle Numerical Ability

A pyramid has a square base. Find the surface area of the pyramid if its slant height is 10 centimeters and the sides of its base are 5 centimeters long.

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exam Other Question

Divide. Then simplify by taking roots, if possible. Assume that all expressions under radicals represent positive numbers.

sqrt ( 6a ) / sqrt ( 3a ) Your boat will go 15 miles per hour in still water. If you can go 12 miles downstream in the same amount of time it takes to go 9 miles upstream, then what is the speed of the current?