Find the surface area of a chalk box, whose length, breadth and height are 18 cm, 10 cm and 8 cm respectively.
Given that,
Length = 18 cm
Breadth = 10 cm
Height = 8 cm
We know that,
Total surface area of cuboid = 2 (lb + bh + hl)
= 2 (18 × 10 + 18 × 8 + 10 × 8)
= 2 (180 + 144 + 80)
= 808 cm2