book Maths Puzzle Numerical Ability

Given central angle EOF=120 degrees and radius is 12 meters find:
A. measure of arc EF
B. the arc length EF
C. Area of the sector

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book Other Question

The "floor" of a fraction is defined to be the largest integer which is not greater than that fraction. For instance, floor[10/3]=3. Evaluate:
floor[floor(1000/7)/floor(71/2)].
I am having trouble with this question, Find the lowest common denominator of p+3
----------
p^2+7p+10

and
p+5
----------
p^2+5p+6

Can someone please help me?