What is the surface area of the cube? A. 243 cm2 B. 364.5 cm2
C. 486 cm2 D. 729 cm2
(first answer gets

c. 486cm²

Step-by-step explanation:

Given parameters:

 Length  = 9cm

 Width = 9cm

 Breadth  = 9cm

Unknown:

Surface area of the cube  = ?

Solution:

 The surface area of a cube is given as:

    Surface area  = 6l²

l is the length;

 For a cube all the sides are equal

   Surface area = 6 x 9²  = 486cm²

21

step-by-step explanation:

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