15+70+45=130 :)) that’s how u calculate the perimeter just add them all together.
        
             
        
        
        
Answer: -1.51, or it could be 4.09 < 5.6 (Im sorry if I get it wrong I just wanted to help)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The area of the pyramid’s base is 36 in².
The pyramid has 4 lateral faces.  
The surface area of each lateral face is 27 in².
Step-by-step explanation:
"<u>Lateral</u>" means side, so the lateral faces are <u>triangles</u>.
The <u>base</u> is the bottom, which is a <u>square</u>.
To calculate the <u>area of the base</u>, use the formula for area of a square.



To calculate the <u>area of a lateral face</u>, find the area of a triangle.




In a pyramid, the number of lateral faces is the same as the number of sides in the base. <u>The square base as 4 sides, so there are 4 lateral faces</u>.
 
        
             
        
        
        
Answer:
.00059 or .0006
Step-by-step explanation:
You are trying to find what won't be in the water because there are many combinations so you use a complement formula. 
1-0.79=0.29
Use the left over percentage in an equation to determine the probability.

The exponent 6 comes from the number of locations.