Please answer the following in full:

O O 1. A window has the shape of a rectangle, topped by a semicircle, as shown. The perimeter of the window is 8 m. Determine an equation that be used to express the area of the window in terms of its width. You need not solve the problem. O O1 km 2. An oil pipeline will connect points A and B which are 3 km apart and on opposite .. . banks of a 1 km wide river. From point A to point C on the opposite bank, the pipeline will run under the water. From point C to point B the pipeline will run above ground. C The cost of running the pipeline under water is three times the cost of running it 3 above ground. Determine an equation that can be used to minimize the cost. You need not solve the problem.6. A farmer wants to fence a rectangular area of 800,000 m2 and divide it in half with a fence parallel to one of the sides of the rectangle, and twice as expensive. How can this be done in order to minimize the cost of the fence? This is a disclaimer. External Resources will open in a new window. Not responsible for external content