exam Maths Puzzle Numerical Ability

Given that the sum of the interior angles of a regular polygon is four times

the sum of its exterior angles.

Find the number of sides of this regular polygon.

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exam Other Question

If a ball is thrown upward from the ground, the equation to find the height h of such a ball thrown with an initial velocity ft/s is of {{{48^hltj=48t-16t^2}}} Find the time tha Gene earned $264 last week. He worked a total of 44 hours, part at an hourly rate of $5.50 and part at an hourly rate of $8.25. How much did he earn at each rate?