stion 5 - 20 marks his question is based on your work on MU123 up to and including Unit 8. (a) Figure 2 shows a cuboid and a solid hemisphere (not drawn to scale). Edge AB has length 25 cm, and the diagonal AC has length 34 cm. The radius r of the hemisphere is 9 cm. D r = 9 cm 25 cm B 34 cm C Figure 2 Give your answers to each of the following to two significant figures. i) Find the surface area of the hemisphere. (ii) Find the volume of the hemisphere. (iii) Use Pythagoras' Theorem in triangle ABC to find the length of side BC. (iv) If the volume of the hemisphere is half the volume of the cuboid, find the depth AD of the cuboid, showing your working at each stage