Question

2 cubes each of volume 64cm3 are joined end to end.Find the surface area of the resulting cuboid.​

Answer 1

Step-by-step explanation:

$volume = 64cm {}^{3 } \\ side = 4cm \\ surface \: area \: of \: cuboid \: = 2(lb + bh + lh)$

$2((8 \times 4) + 4 \times 4 + 8 \times 4) \\ 2(32 + 16 + 32) \\ 2 \times 80 = 160 {cm}^{2}$