With what? I would love to help you
        
                    
             
        
        
        
Answer:
1,350 cm^2
Step-by-step explanation:
It's a cube so all faces/bases are the same.
15 × 15 = 225
225 × 6 = 1,350
 
        
             
        
        
        
It is -3/2, 2/10 - 5/8 = -3/2
        
             
        
        
        
Let 
x--------> the measure of the adjacent interior angle
y--------> the measure of an exterior angle at the vertex of a polygon
we know that
The measure of the adjacent interior angle and the measure of an exterior angle at the vertex of a polygon are supplementary angles
so
 °
°
<u>Examples</u>
case 1) 
<u>In a square</u>
 °
°
so
 °
°

In this case 
The measure of an exterior angle at the vertex of a polygon equals the measure of the adjacent interior angle
case 2) 
<u>an equilateral triangle</u>
 °
°
so
 °
°

In this case 
The measure of an exterior angle at the vertex of a polygon is not equals the measure of the adjacent interior angle
therefore
<u>the answer is</u>
sometimes
 
        
                    
             
        
        
        
You would write it as -509 over 100