if we made this into a rectangle (pretend you chop off one of the triangles and glue it to the other one to make a long rectangle), the length would be 10+4.5, or 14.5. to find what h is, we can just divide 116 by 14.5. our answer is 8.
One side of the back yard is usually the back side of the house. But we won't worry about that ... we'll just go ahead and fence all four sides, like you seem to have said.
Any rectangle has two sides that are the length and two sides that are the width. So the distance around the back yard is
(14 + 14) + (12 + 12) = 52 meters.
(That's called the "perimeter" of the yard.)
If every meter of fence costs $9.00 , then 52 meters of fence will cost
