Q55Short answer
The surface area of a cuboid formed by joining face to face 3 cubes of side x is 3 times the surface area of a cube of side x.
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(a) 10 am (b) 16 km (c) not travelling (d) 40 km (e) 24 km (f) 2 pm (g) 4 km/h, 0 km/h (h) 10 p.m.