exam Maths Puzzle Numerical Ability

given a circle with the radius of 3960 miles, assume that the distance AB is a straight line, and triangle AOB is a right triangle with a right angle at B. Angle O is 1/60 of 1 degree. Find the distance of AB.

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exam Other Question
The volume of a box is 2p^4 + 14p^3 + 20p^2. The height is p and the width is p + 5. What is the length? Factor the polynomial

64^a6^b4^c6-81^d8