Question

2 cubes each of edge 10 cm are joined fid the surface area of cuboid

Answer 1

Length l = 10+10 = 20cm

breadth b = 10cm

height h = 10cm

SA of cuboid= 2(lb + bh + hl)

= 2(20 × 10 + 10 × 10 + 10 × 20)

= 2 (200+100+200)

=2 × 500

=1000cm²