Question

the total surface area of cube is 776 cm^2 .find the length of its edge

Answer 1

Hii there !!
Here is ur answer

Total surface area of cube = 6a²
   
 Here, 726 cm² is the total surface area of cube.

Therefore,
                     6a² = 726 
                       a² = 726/6
                       a² = 121
                       a = √121
                       a = 11.

Hence, Length of edge is 11 cm.


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