Question

Question 103

Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.

Answer 1

If three cubes each of side 10 cm are joined then a cuboid will be formed of dimensions $30cm\times 10cm\times 10cm$

$\therefore$ Surface area of the cuboid = 2[lb + bh + hl]
$=2[30\times 10+10\times 10+30\times 10]=2[300+100+300]=2\left[700\right]=1400c{m}^2$