text: please help me to answer this.the sheep pen.it my project add math.it important to me.please.? a farmer wishes to build a rectangular sheep with a 160 m fence,using one side of an existing shed as the side.the shed is also rectangular of measurement 20 m mutiple 20 m.  [a]find the measurement and the area of the sheep pen if one side of the existing shed is used as the width of the sheep pen.    [b]by using the fence of the same length and using the width of the shed as the part of the sheep pen,find the length and width of the sheep pen with maximum area. how can 20 x 20 be a rectangle, if the shed is 20m then the opposite fence would be 20m that leaves 140metres of fence halve it and thats 20m by 70m yard which is a 1400m squared yard.