Question

The total surface area of a cube is 2400sq.cm.what is its length​

Answer 1

Step-by-step explanation:

Total surface Area of a cube = 6a²

6a² = 2400cm²

a² = 2400cm²/6

a² = 400 cm²

a = 20 cm

Length of a side of a cube is 20 cm.

HAVE A NICE DAY!!!

Answer 2

Answer:

$\huge{ \bold{ \underline{ \overline {|given| }}}}$

• Total surface area of cube is $\rm2400 {cm}^{2}$

$\huge{ \bold{ \overline{ \underline{ |to \: find| }}}}$

• Side of cube

$\huge{ \bold{ \underline {\overline{ \rm{ |solution| }}}}}$

Total surface area of cube =$\rm{2400 {cm}^{2} }$

$\rm{6 \times {side}^{2} }$=$\rm{2400 {cm}^{2} }$

$\rm {side}^{2} = \frac{{ \cancel{2400}cm}^{2}} { \cancel6} = 400 {cm}^{2}$

$\rm{side = \sqrt{400 } {cm}^{2} }$

$\huge{ \pink{ \rm{side = 20cm}}}$