Question

If $6$ cubes each of $10cm$ edge are joined end to end, the surface area of the resulting solid will be

• A. $3600c{m}^2$
• B. $3000c{m}^2$
• C. $2600c{m}^2$
• D. $2400c{m}^2$

Answer 1

The correct option is C $2600c{m}^2$

Length of resulting solid $=6\times 10cm=60cm$

Breadth $=10cm$, Height $=10cm$

$\therefore$ Surface area of the solid

$=2(60\times 10+10\times 10+10\times 60)c{m}^2$

$=2(600+100+600)c{m}^2$

$=2600c{m}^2$