If the chalkboard is just rectangular we can just use:
(2 x L) + (2 x W)
or
L+L+W+W
L= Length
W= Width
2 and five fifths = 3
I hope that's help. Good night .
Answer: 112
2x+3x+10=180
5x=170
x=34
3x+10=112
Answer:
I need help too
Step-by-step explanation: