Answer:
The formula for calculating the surface area of a cuboid is as follows.
Surface Area of Cuboid = 2lw + 2lh + 2hw
Where,
- l = Length = 20cm
- w = Width = 5cm
- h = Height = 10cm
Therefore,
Surface Area of Cuboid = (2 x 20 x 5) + (2 x 20 x 10) + (2 x 10 x 5)
= 200 + 400 + 100
= 700
