Answer:
i can try just put the questions up
Step-by-step explanation:
 
        
             
        
        
        
Answer:
200
Step-by-step explanation:
 
        
                    
             
        
        
        
1.) Find the area of the circle:
• Formula: A=pi•r^2
- To find the area of a circle, we need to have the radius, and since the diameter is 2x the length of the radius, the radius is 1/2 of the diameter. 
Finding the radius: r=d/2 
r=12/2
r = 6. 
- Now that we know that r=6, we can substitute it into the formula: 
• A=pi•r^2 
A=pi•(6)^2 
A=113.097
- The area of the circle is 113.097ft.^2. We know that a square foot is $10.50. So, we have 113.097 square feet at $10.50/sq. foot. This means that we will add $10.50 113.097 times. Therefore: 
113.097 • 10.50 = 1,187.518
So, total, it will cost $1,187.518
Feel free to give Brainliest!!!
        
             
        
        
        
Answer:
 Yes, It is a right triangle for the given vertices.
Step-by-step explanation:
Given:
Q(7, –10), 
R(–3, 0), 
S(9, –8)  
To Find:
determine whether is a rig ht triangle for the given vertices = ?
Solution:
QR=
QR=
QR=
QR= --------------------------(1)
--------------------------(1)
QR=14.142136
RS=
RS=
RS=
RS= ---------------------------(2)
---------------------------(2)
RS=14.422205
QS=
QS=
QS=
QS= -------------------------------------(3)
-------------------------------------(3)
QS=2.828427
According to Pythagorean Theorem,

Substituting the values,


 208 = 208
Pythagorean theorem is satisfied. Hence it is a right triangle.