Question

Take any cuboidal object available at your cover box, matchbox or any carton available.) home (toothpaste Measure its length its length, breadth and height. breadth and ii) Calculate its and volume curved surface area, Total surface area ​

Answer 1

Total Surface Area: Surface area (SA) or total surface area (TSA) of the cuboid

= Sum of all faces of the cuboid

= lb + lb + bh + bh + lh + lh

⇒ SA or TSA = 2 (lb+bh+hl) sq.units

i.e. SA or TSA =2 (Length x Breadth + Breadth x Height + Height x Length)

Lateral Surface: Area If out of the six faces of a cuboid, we leave the bottom and top faces and find the area of the four faces, then the area of these four faces is called the lateral surface area of the cuboid.

So, lateral surface area of a cuboid = 2(l + b)h

Diagonal of a Cuboid

Diagonal of a cuboid = √(l2 +b2 +h2