exam Maths Puzzle Numerical Ability

Simplify and reduce to lowest terms

(sqrt)16/(sqrt)32

and

(sqrt)8+(sqrt)32

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exam Other Question

if there is a plot of land that is 24 by 60. And surrounding the land is a walkway with an are of 247 ft sq. What is the length of the width of the walkway. Given a square piece of material 25 inches on each side, we are to make an open box by cutting a square with x inches on a side from each corner and turning up the sides. Express the volumn V of the box in a function of x.