Barbara is building a wooden cabin. the cabin is 42 meters wide. she obtained a bunch of 27 meters long wooden beams for the roof of the cabin. naturally, she wants to place the roof beams in such an angle that each pair of opposite beams would meet exactly in the middle. what is the angle of elevation, in degrees, of the roof beams?

Chosen according to the volume of oil it can haul, as shown in at a railway yard, locomotives are used to haul containers carrying the table. locomotive capacity a450 0 -750 cubic feet cg35 750-1,500 cubic feet br73 1,500-2,500 cubic feet yh61 2,500-3,500 cubic feet & the four cylindrical containers listed in the table need to be hauled. cylinder length (ft.) diameter (ft.) fill level a 40 , 12 half b 24 8 full c 16 16 full 6 12 full d match each container to the locomotive needed to haulit a450 cylinder a yh61 cylinder d