Question

Four cubes each of 10 cm are joined end to end. Find the surface area of the resulting cuboid .​

Answer 1

Step-by-step explanation:

if four cubes are joined each other

each have side 10cm

then they cuboid

have length"l"=10+10+10+10=40cm

breadth"b"=10cm

height"h"=10cm

surface area of cuboid =2h(l+b)

=2(10)(40+10)

=20(50)

=1000cm cube

Answer 2

Step-by-step explanation:

• Here formed cuboid is of length 40 cm, breadth of 10 cm and height of 10 cm.
• Surface area of cuboid = 2 ( lb + bh + hl )
• 2 ( 40 × 10 + 10 × 10 + 10 × 40 )
• 2 ( 400 + 100 + 400 )
• 2 × 900 = 1800 cm²