Question

find the length of a size of a cube whose total surface area is 726cm2​

Answer 1

Answer:

Total surface area of a cube = 726 cm²

6 × (side)² = 726

(side)² = 121

side = 11 cm

Hence, the length of the edge of cube is 11 cm.

Answer 2

Given,

• Area of the cube → 726 cm².

To find :-

• The length of the cube .

We know that,

$\underline\bold{T.S.A. \: of \: a \: cube = 6( {lenght)}^{2} }$

$\implies \: 726 = 6(lenght)^{2}$

$\implies \:(lenght)^{2} = \frac{726}{6}$

$\implies \:(lenght)^{2} = 121$

$\implies \:lenght = \sqrt{121}$

$\implies \: \boxed{ \bold{lenght = 11 \: cm. }}$