Math help please?

Eric, Jose, Shannon, and Jackie wanted to plant a garden. Jose’s dad said they could use a
rectangular space in the backyard that was 8 m by 4 m.
The friends decided they would first like to make a colorful border for the garden using
small flowering plants called marigolds.
If they planted the marigold plants 10 cm apart, how many would they need to complete
the border?

I HAVE NO IDEA HOW TO DO THIS PROBLEM. PLease tell me what to do to more or less solve this, because this is very confusing.

3 answers

Let's first convert the meters to centimeters.

8 m = 800 cm
4 m = 400 cm

The perimeter of the garden is:
P = 2L + 2W
P = 2(800) + 2(400)
P = 2400 cm

2400 / 10 = 240 plants

THANK YOU SO MUCH !!!!!!!!

You're very welcome!