4th grade
posted by Dianna on .
How many shapes have a perimiter that's 30 cm?

Try here:
http://search.yahoo.com/search?fr=mcafee&p=how+many+shapes+have+a++perimeter+thats+30+cm
Sra 
Any shape can have a perimeter of 30 cm, both regular and irregular.
see http://en.wikipedia.org/wiki/Polygon 
all but a circle

2x_+2 x width = perimeter