Answer: 1- a square has 4 equal sides so if one side is 9cm then the rest are 9cm, so 9x4= 36cm
2- do the same thing as part 1 but add a power of 2 to it, so 36^2 = 1296cm 
Step-by-step explanation:
 
        
             
        
        
        
i think its c (a picture of a city )
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation:
To make it easy let's start by organizing our information : 
- AC=12 AND BD=8 
- ABCD is a rhombus 
- K and L are the midpoints of sides AD and CD 
- we notice that the rhombus ABCD is divided into four right triangles 
What do you think of when you hear a right triangle ? 
- The pythagorian theorem ! 
AC and BD  are khown so let's focus on them .
If we concentrated we can notice that AB and BD are cossing each other in the midpoints . why ? 
Simply because they are the diagonals of a rhombus .
ow let's apply the pythagorian theorem :
- (AC/2)² + (BD/2)² = BC² 
-  6²+4²=52
- BC²= 52⇒ =BC =BC
Now we khow that : AB=BC=CD=AD= 
 
This isn't enough . Let's try to figure out a way to calculate the length of KL  wich is the base of the triangle 
- KL is parallel to AC 
- k is the midpoint of AD and L of DC 
I smell something . yes! Thales theorem 
- KL/AC=DL/DC=DK/AD WE4LL TAKE OLY ONE 
- KL/12= /2* /2*  
- KL/12=1/2⇒ KL=6 
 Now we have the length of the base kl 
Now the big boss the height :
- notice that you khow the length of KL 
- BD crosses kl from its midpoint and DL =  /2 /2
What I want to do is to apply the pythgorian thaorem to khow the lenght of that small part that is not a part of the height of the triangle . I will call it D 
- DL²=(KL/2)²+D²
- 52/4= 9+ D² 
- D² = 52/4-9 +4 SO D=2 
now the height of the trigle is H= BD-D= 8-2=6 
NOw the area of the triangle is : 
- A=(KL*H)/2 ⇒ A= (6*6)/2=18 
THE ANSWER IS 18 SQ.UN 
 
        
             
        
        
        
Answer:
0.41666666, to round up, the answer is 0.42
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
17 units
Step-by-step explanation:
Because the triangle is isosceles, 2 of its sides are congruent; namely, the two sides that are opposite of the 2 congruent angles are contruent.
Because of the reason stated above, we can see that AC is congruent to BC, meaning that:
x+9=2x-8
-x      -x
9=x-8
+8  +8
17  = x
Notice that BC is equal to x, so 17 is our final answer.