Fill in the blanks:
(i) If l, b, h be the length, breadth and height of a cuboid, then its whole surface area = (………… ) sq units.
(ii) If l, b, h be the length, breadth and height of a cuboid, then its lateral surface area = (…………… ) sq units.
(iii) If each side of a cube is a, then its lateral surface area is………..sq units.
(iv) If r is the radius of the base and h be the height of a cylinder, then its volume is (………….. ) cubic units.
(v) If r is the radius of the base and h be the height of a cylinder, then its lateral surface area is (…………. ) sq units.
(i) We know that,
Total surface area of the cuboid = 2 (lb + bh + hl
(ii) We know that,
Lateral surface area of cuboid = 2 [(l + b) × h]
(iii) We know that,
Lateral surface area of cube = 4a2
(iv) We know that,
Volume of cylinder = 
2h
(v) We know that,
Lateral surface area of cylinder = 2