One square grid has an area of 400.
Another square grid has an area of 256.
The area of the third grid can be:
(squares in third grid) + 256 = 400
OR
256 + 400 = (squares in third grid)
We get this by applying the Pythagorean theorem.
So, the squares in the third grid can either be 144 or 656. And we only have 144 as an option, so that is your answer.
Your final answer is D. 144.
        
             
        
        
        
Answer:
he counted from 32 to 40 , and not to -40
Step-by-step explanation:
the difference is 72 degrees
 
        
             
        
        
        
Answer:
A. 1.5 cm by 2.5 cm 
B. 27 cm by 45 cm 
C. 9 cm by 15 cm
D. 30 cm by 50 cm
Step-by-step explanation:
The dimensions of the original painting = 12 cm by 20 cm painting 
Hence, the proportion is: 
12/20 = 0.6
Hence, we compare the options given in the question.
 A. 1.5 cm by 2.5 cm
= 1.5/2.5 = 0.6 , option A is correct
 B. 27 cm by 45 cm
27cm/45 cm = 0.6 Option B is correct
 
C. 9 cm by 15 cm
9cm/15cm = 0.6 , Option C is correct
 D. 30 cm by 50 cm
30 cm /50 cm = 0.6 Option D is correct
 E. 6 cm by 14 cm
6cm/14 cm = 0.4285714286
Option E is not correct
Therefore, Options A to D are the correct options
 
        
             
        
        
        
Answer:
21:A 22:D
Step-by-step explanation:
hope that helps