The holes cut in a roof for vent pipes require elliptical templates. A formula for determining the length of the major axis of the ellipse is given by L = f(H,D)=√H² + D², where D is the (outside) diameter of the pipe and H is the "rise" of the roof per D. units of "run"; that is, the H (See the figure to the right.) The width of the ellipse (minor axis) equals D. Find the length and width of the ellipse D slope of the roof is el 2. 1 required to produce a hole for a vent pipe with a diameter of 3.50 in. in roofs with slope The length is in. and the width is in. (Type integers or decimals rounded to two decimal places as needed.) Roof line -D