Exercise: 13.1 1. 2 cubes each of volume 64 cm 3 are joined end to end. Find the surface area of the resulting cuboid. Answer : The diagram is given as: Given, The Volume (V) of each cube is = 64 cm 3 This implies that a 3 = 64 cm 3 a = 4 cm Now, the side of the cube = a = 4 cm Also, the length and breadth of the resulting cuboid will be 4 cm each. While its height will be 8 cm. So, the surface area of the cuboid = 2(lb+bh+...