The number 20 is not a prime number.
18 ? am not really sure tho its kinda difficult lol
Area of the whole rectangle with dimensions 4 by 4 = 16cm²
Area of the missing 4 corner squares = 4 ( 1 x 1) = 4 cm²
Area of the figure = 16 - 4 = 12 cm²
Answer: 12 cm²
(2x , 2x) because the figure is 2 times the size it was at 3,5