Surface Area and Volume of Solids

**Surface areas of cuboid:**

Lateral surface area of the cuboid = 2*h* (*l + b*)

Total surface area of the cuboid = 2 (*lb + bh* + *hl*)

**Note: **Length of the diagonal of a cuboid =

**Example**:

**Find the edge of a cube whose surface area is 294 m**^{2}**.**

**Solution**:

Let the edge of the given cube be *a*.

∴ Surface area of the cube = 6*a*^{2}

Given, 6*a*^{2} = 294

**Surface areas of cube:**

Lateral surface area of the cube = 4*a*^{2}

Total surface area of the cube = 6*a*^{2}

**Note: **Length of the diagonal of a…

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