exam Maths Puzzle Numerical Ability

A Cube shaped box fits exactly around a soccer ball with a diameter of 22.28 cm. What percent of the box is empty space?

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exam Other Question

PQR is an isosceles triangle such that , QP=QR=13cm and the altitude PS=12cm . Find the length of PR ? PLS HELP . Thanks Use point-slope form to determine the equation of hte line passing through the two given points. Then write the equation in slope-intercept form.
(4,3), (2,-9).