I was able to answer parts (a) and (b) , however struggled with part (c). I've given the questions to part (a) and (b), as i think there is material given that is needed, in order to answer part (c)....
A rectangle has legth (l) and width (w).
(a) Write an expression for the perimeter and area in terms of l and w.
(b) If the perimeter is 100 meters and the area is 75 meters squared, change the expression from part (a) into equations
(c) Solve the equations to find the dimensions of the rectangle correct to 3 decimal places.