Question

Judy built a rectangular patio that is 9 meters long and has a perimeter of 40, what is the length of Judy's patio?

Answer 1

length=9m perimeter=40m so,applying formula, perimdeter=2(l+b) 40=2(9+b) 40/2=9+b 20=9+b 20-9=b 11m=b