Question

find the volume of a cube one face of which hasan area of 81my square solve the problem

Answer 1

Area = 81 m² (Given)

.

Find Length:

Area = Length²

Length² = 81 m²

Length = √81

Length = 9

.

Find Volume:

Volume = Length³

Volume = 9³

Volume = 729 m³

.

Answer: Volume =729 m³

Answer 2

$\text {Your answer :- }$

$given = > area = 81 {m}^{2} \\ find = > volume \\ \\ but \: first \: we \: need \: to \: find \: the \: side. \\ \\ = > area = 81 {m}^{2} \\ \\ = > area = {side}^{2} \\ \\ = > 81 = {side}^{2} \\ \\ = > {9}^{2} = {side}^{2} \\ \\ = > 9 = side$

$\textbf { Side = 9m }$

$now \: lets \: find \: the \: volume \\ \\ = > volume = {side}^{3} \\ \\ = > volume = {9}^{3} \\ \\ = > volume = 9 \times 9 \times 9 \\ \\ = > volume = 729$

$\textbf { Volume = 729m^3}$

$\text {Thanks!!}$