SIN Bin

1986, Problem 6

SnoopySnoopy is flying his biplane at an altitude of 225m above Lake Ontario, which is 160m deep. Using his machine gun sights, he sees the Red Baron in a submarine resting on the bottom of the lake. The sights of Snoopy's gun point 37° below horizontal. What is the horizontal separation between Snoopy and the Red Baron? (Answer in m.)

(a) 510
(b) 460
(c) 420
(d) 380
(e) 290