exam Maths Puzzle Numerical Ability

if I have the height and volume of a cylinder, how do I find the radius? or diameter?

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exam Other Question

in 1993, the life expectancy of males in a certain counrty was 71.3 years. In 1999, it was 73.7 years. Let E represent the life expectancy in years t and let t represent the number graph the following equations:

(3) y = -x - 2
(4) y = -x + 2