Measuring volume by displacement is A. finding the volume of an object with a ruler.
B. finding the amount of matter in an object with a
scale.
C. finding the volume of an object by pushing liquid
aside.
D. finding volume of an object by using a scale.

i believe it is 40–40–20%

explanation:

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

b.false that your answer

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.