deanapetrov deanapetrov
  • 02-11-2020
  • Mathematics
contestada

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

What is the surface area of the cube A 243 cm2 B 3645 cm2 C 486 cm2 D 729 cm2 first answer gets brainly class=

Respuesta :

quasarJose
quasarJose quasarJose
  • 02-11-2020

Answer:

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

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