Respuesta :
Because it is a rectangle it is 200cm+200cm+400cm+400cm. The perimeter is 1200cm.
To find the perimeter you do L+L+W+W
200+200+400+400
400+400+400
800+400
1200
the correct answer is B.
200+200+400+400
400+400+400
800+400
1200
the correct answer is B.