Answer:
531 in^2
Step-by-step explanation:
21 x 18 = 378 in^2
17 x 9 = 153 in^2 
378 + 153 = 531 in^2
 
        
             
        
        
        
Answer:
ILOVEMYCOUNTRY!!!
Step-by-step explanation:
F........U.......C.......K.....YOU.....BRO.......USE UR BRAINS !!!!
 
        
             
        
        
        
Https://mathbitsnotebook.com/Algebra1/RealNumbers/RNProp.html
        
             
        
        
        
Answer:
False
Step-by-step explanation:
A regular polygon may be defined as the polygon that have sides of equal length known as equilateral and angles made up of equal angles, known as equiangular. 
The  of symmetry in a regular polygon is always equal to the number of sides of the polygon. For example, a regular pentagon have 5 sides, so the lines of symmetry of the regular pentagon is also 5, a square having 4 sides also has 4 lines of symmetry.
 of symmetry in a regular polygon is always equal to the number of sides of the polygon. For example, a regular pentagon have 5 sides, so the lines of symmetry of the regular pentagon is also 5, a square having 4 sides also has 4 lines of symmetry. 
 
        
             
        
        
        
Answer:
25%
Step-by-step explanation:
1200/960 = 1.25
So it grew by 25%