Question

A particular cube has edges of length $2$. If half the faces are painted green and half the faces are painted red, calculate the total area of the faces painted green.

• A. $12$
• B. $14$
• C. $20$
• D. $13$

Answer 1

The correct option is A $12$

Cube has edge length of $2$
The cube has $6$ faces of which $3$ are painted green and $3$ are painted red.
Area of cube is $=$ edge${}^2$
Total surface area of the faces painted green is
$3\times {\left(2\right)}^2=3\times 4=12$