Question

Find the edge of a cube whose area is 864 cm square

Answer 1

Answer:

firstly, we have to write down the formula of area of a cube, that is, the total surface area of the cube.

therefore, 6a^2 = 864

               a^2= 144

          so, a = 12cm

the edge of the cube will be 12 cm each

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Answer 2

Answer:

12cm

Step-by-step explanation:

area=6a2

864=6a2

a2=864/6=144

a=12cm