Question

formula related to
surfaces and volume.

Answer 1

Cuboid

1. Volume of a cuboid = (length x breadth x height) cubic unit

2. Total surface area of a cuboid = 2 (lb + bh + lh) sq units

3. Lateral surface area of a cuboid + [2 (l + b) x h] sq units

Cube

1. Volume of a cube = (edge)³ = a³ cubic units

2. Total surface area of a cube =  ( 6a² ) sq units

3. Lateral surface area of a cube = ( 4a² ) sq units

Hope it is helpful.

Answer 2

Formulas related to SA & Volume

$\begin{array}{|c|c|c|}\cline{1-3}\bf Shape&\bf Volume\ formula&\bf Surface\ area formula\\\cline{1-3}\sf Cube&\tt l^3}&\tt 6l^2\\\cline{1-3}\sf Cuboid&\tt lbh&\tt 2(lb+bh+lh)\\\cline{1-3}\sf Cylinder&\tt {\pi}r^2h&\tt 2\pi{r}(r+h)\\\cline{1-3}\sf Hollow\ cylinder&\tt \pi{h}(R^2-r^2)&\tt 2\pi{rh}+2\pi{Rh}+2\pi(R^2-r^2)\\\cline{1-3}\sf Cone&\tt 1/3\ \pi{r^2}h&\tt \pi{r}(r+s)\\\cline{1-3}\sf Sphere&\tt 4/3\ \pi{r}^3&\tt 4\pi{r}^2\\\cline{1-3}\sf Hemisphere&\tt 2/3\ \pi{r^3}&\tt 3\pi{r}^2\\\cline{1-3}\end{array}$

• The outer face, outside, or exterior boundary of a thing outermost or uppermost layer or area .

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