(a)[1]
Determine the length of this line in millimetres.
(b(i))[1]
Determine the size of angle $x$.
(b(ii))[1]
State the mathematical name for this kind of angle.
(c)[2]
Calculate the value of $x$.
(d)[2]
Find the size of one interior angle in a regular 16-sided polygon.
(e(i))[1]
Complete this statement. $X$, $Y$ and $Z$ are points on the ................................ of the circle, centre $O$.
(e(ii))[1]
Give a reason for angle $XYZ$ being $90^{\circ}$.
(f)[3]
Calculate the area of the circle, and include the units in your answer.