In ΔRST, the measure of ∠T=90°, the measure of ∠S=75°, and ST = 64 feet. Find the length of TR to the nearest tenth of afoot.

Need on this geometry question. explain how you did it.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?