Someone asked the home improvement company to decorate his newly bought house. The owner plans to paint the wall and ceiling with cement paint of 20 yuan per square meter, and lay a wooden floor of RMB 0/00 per square meter/kloc on the ground floor. The home improvement company gives three views of a room as shown in figure 1, and the elevation as shown in figure 2 (unit: meter).

(1) What is the cost of materials for painting cement paint and paving wood floors in this room?

(2) As shown in Figure 2, point E is on the side and m is the midpoint. The owner wants to determine a decorative line (at the edge) on the wall, and requires the decorative line to be perpendicular to the plane EDPM. Please help the decoration company to determine the length and give reasons.

22. (The full score of this short question is 14)

Known function,.

(i) If the tangent of the curve at this point is perpendicular to the axis, find the value of b;

(2) Under the condition of (1), verify that:

(iii) If yes, try to explore whether the image of function sum has a common tangent at its common point, and if so, study the number of a values; If it does not exist, please explain why. ?

1 1093 1505 1? Give you a q