Pls help Activity 2: Cost of fencing
A rectangular paddock is to be fenced in on three sides, the fourth side being formed by a river.
The cost of fencing at right angles to the river is $10 per metre, while that parallel to the river 19
$15 por metre. Find the dimensions of the rectangle so that the cost of fencing will be a
minimum, if the area of the paddock is 100 m.​