Length
9
m
Width
5
m
Fence needed
28
m
Fence = 2 × (9 + 5) =
28
m
🎯 Reverse challenge
↻ New challenge
↺ Reset
Fencing a yard means buying enough for the
whole way round
— that's the perimeter. Drag the
dots
to resize the yard. In the
reverse challenge
you're told how much fence you've got and one side, and you drag the other side until it fits.