Question

Derive the formula to find total surface area

of a cuboid(Proper illustration and formula should be shown with an example)

pls answer properly
I have project work on it:)​

Answer 1

Answer:

TSA of a cuboid = 2(lb+bh+lh) sq. units

Step-by-step explanation:

A cuboid is a 3 dimensional rectangle with the 3rd dimension as its height h

so, cuboid will be having its dimension l*b*h, where l is the length , b is the breadth and h is the height.

so, cuboid has 6 faces of dimensions lb,bh,lh,lb,bh and lh sq.units repectively

so, the area of each face will be as given above

=> total surface area will be = lb + bh + lh + lb + bh + lh

                                              = 2(lb+bh+lh) sq. units