Homework Soursedetermine the total surface area of a box that is 20 cm wide
determine the total surface area of a box that is 20 cm wide, 30 cm long, and 40 cm tall.
determine the total surface area of a box that is 20 cm wide, 30 cm long, and 40 cm tall.
determine the total surface area of a box that is 20 cm wide, 30 cm long, and 40 cm tall.
Solution
The Figure given can be condiered as a cuboid (since none of the sides are equal)
Here l = 30cm, breadth = 20cm and height = 40cm
Total Surface area of a cuboid = 2(l*b + b*h + l*h)
= 2(30*20 + 20*40 + 30*40)
= 2(600 + 800 + 1200)
= 2(2600)
= 5200cm3
