exam Maths Puzzle Numerical Ability

a solid cylinder has a base radius of 5cm and a height of 8cm.
a. calculate the volume of the cylinder.
b.calculate the total surface area of the cylinder.

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exam Other Question
two vertical angles are supplementary. find the measure of each angle. Simplify

(20 x 10 -4 power)(4 x 10 ninth power)
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3,200 x 10 -3power