15 cm 15 cm 16 cm 20 cm 57 cm What is the perimeter of the polygon?
1 answer:
You might be interested in
Answer:
3 cm
Step-by-step explanation:
Set up an equation that solves for the surface area, "112" :
10(2)+10(2)+2x+2x+10x+10x = 112
20+20+4x+20x = 112
24x+40=112
24x=72
x=3
So, 3 cm.