Question

A cylindrical glass is 40% full of liquid. If the base of the glass has a radius of 5 inches and the height of the glass
is 20 inches, how much liquid is in the glass?

Answer 1

40

100

or the decimal 0.40. Notice that 80 out of 200 and 10 out of 25 are also 40%, since  

80

200

=

10

25

=

40

100