A please help me i really need it

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152

The triangle rst, rs = 65 and st = 60. which equation could be used to find the value of angle s?