the barrel of a fountain pen, cylindrical in shape , is 7cm long and 5mm in diameter .a full barrel of ink in the pen will be used up in writting up 310 words on an average . how many words would use up on a bottle of ink containing one-fifth of a litre ?answer correct to the nearest 100 words.

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?