Question

60 POINTS!!!!!!!!!! If each square of the grid below is 0.5 cm by 0.5 cm, how many centimeters (cm) are in the perimeter of the blue figure?

Answer 1

Answer: 21

Explanation:

I checked it on AOPS

Answer 2

21 cm

Explanation:

The perimeter is the length of the outside of a shape. In this case, we can simply add up all the edges and multiply by .5(the length of one edge).

Horizontal Edges: 22

Vertical Edges: 20

Total: 42

Perimeter =
`42 * 0.5 = 21 cm`