Question

♦️♦️please solve this♦️♦️​

Answer 1

$\huge\blue{♡♡♡Answer♡♡♡}$

Let the length of each edge of the cube be a cm.

Then, its total surface area =

$(6a {}^{2})cm {}^{2}$

But the total surface area of the cube =

$486cm {}^{2}$

$hence 6a {}^{2} = 486 = > a {}^{2} = > a = \sqrt{81} = 9$

The length of each edge of the cube = 9 cm

Hence volume of the cube =

$a {}^{3} cubic units$

$(9 \times 9 \times 9) cm {}^{2} = 729cm {}^{3 }$

Please mark me as a Brainlist and follow me plz......

Answer 2

Suppose,

the length of the each side =a cm

The total surface area =6a²

By condition,

$6 {a}^{2} = 486 \\ Or, {a}^{2} = \frac{486}{6} \\ \: \: \: \: \: = \frac{243}{3} \\ \: \: \: \: \: = 81 \: cm$

$Or, {a}^{2} = {9}^{2} \\Or,a = 9 \: cm$

Volume of the cube =a³ cm

=9³ cm

=(9×9×9)cm³

= 729 cm³

Therefore, the volume of the cube is

=729 cm³.

➻❥HᎾℙe it helps you..❣❣❣