Question

to form a cube and find the formula for its surface area experimentally​

Answer 1

Step-by-step explanation:

surface area of a cube =6(side)²

Answer 2

Answer

1.For knowledge about cuboid refer to Activity 7.

2. Let the length of the cuboid be l units, breadth b units and height h units, then

• the length of the cuboid be l units, breadth b units and height h units, thenTotal 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)

• 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

• So, lateral surface area of a cuboid = 2(l + b)hDiagonal of a Cuboid

Diagonal of a cuboid = √(l2 +b2 +h2)