1.
Find the area of the regular polygon. Give the answer to the nearest tenth.

square with a radius of 13 m

344 m^2
676 m^2
169 m^2
338 m^2

Question

1.  
Find the area of the regular polygon. Give the answer to the nearest tenth.

square with a radius of 13 m  

    344 m^2
    676 m^2
    169 m^2
    338 m^2

phi · Answer

the radius of a square (btw, I think you should not use this word except for circles), is the distance from the center of the square to one of its corners.

If we double it, we get the length of a diagonal of the square
In this problem you know:
|dw:1363892912437:dw|

remember the area of a square is s^2
can you solve for s^2 ?