PLEASE HELP GIVE ME CORRECT ANSWER AND ILL MARK YOU BRAINLY CORRECT ANSWER MATHEMATICS

PLEASE HELP GIVE ME CORRECT ANSWER AND ILL MARK YOU BRAINLY CORRECT ANSWER MATHEMATICS class=

Answer :

Answer:

it's 800 ft

Step-by-step explanation:

because again when you want to find the area of anything you mulipuly so

10 x 20= 200 then you get the 200 and times it by 4 so 200 x 4 = 800

hope this helps!