exam Maths Puzzle Numerical Ability

Find the area of a regular hexagon with side 2(square root)3cm and apothem 3 cm.

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exam Other Question

Find the following if f(x) = 4x -3 f(-1)

-1 = 4(-1) - 3
-1 = -4 -3
-1 = -1

Double checking to see if I did these right the sum of the digits of a two-digit nimber is 12. the value of the number is five more than 10 times the tens digit. find the number