What is the surface area of the cube below

Option D is correct

Surface area of a cube is 294 square units

Step-by-step explanation:

Surface area of a cube is given by:

square unit

where

S is the surface area of a cube

a is the length of edge of a cube.

From the given figure, we have;

a = 7 units

then;

square units

Therefore, the Surface area of a cube is 294 square units

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

-2

7 - 9 = -2

reversed:

-2 + 9 = 7