(a(i))[2]
Calculate the circumference of this circle.
(a(ii))[2]
Calculate the area of this circle.
(b(i))[1]
Write down the size of angle $ABD$.
(b(ii))[3]
Show that $AB = 19.0$ cm, to 3 significant figures.
(c(i))[2]
Calculate the area of triangle $ABD$.
(c(ii))[2]
Work out the combined area of the circle's shaded segments.
(d(i))[1]
Write down the mathematical name for line $CDE$.
(d(ii))[1]
Write down the mathematical name of line $OD$.
(d(iii))[2]
Use trigonometry to find the size of angle $OCD$.