(a) A cylinder which has a height of 90 cm and diameter 14 cm is closed at both ends.
Find:
(i) its total surface area;
(ii) the volume of the cylinder
[Take π = 22/7]

(b) (i) Using a ruler and a pair of compasses only, construct triangle PQR such that
|PQ| = 8cm, angle PQR = 120° and |QR| = 6 cm.
(ii) Measure:
(α) |PR|;
(β) angle QPR