The distance the piston must travel from tdc to bdc is referred to as the of the engine.
a. bore
b. throw
c. stroke
d. displacement

the answer is b. ''a 12 cm 3 block of aluminum with a mass of 2 grams''.

replace   c   with   a   and simplify.

a = c , b = a, q = n , 2 , a = c , 900 b= a , 700 , q = n , 600 , 2 = b o t h , b = a , q = n