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Two cubes each of edge 4 cm are joined end to end to form a cuboid. The surface area of the resulting cuboid is:

Class 10Surface Area of Combined SolidsMensuration

A $160 cm^{2}$
B $192 cm^{2}$
C $128 cm^{2}$
D $176 cm^{2}$

Step-by-Step Solution

Cuboid is

8 \times 4 \times

4. SA = 2(lb+bh+hl) =

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

.

Answer: A)

160 cm^{2}

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