16, first you need to add on the four he lost to the 18 he ended with.
First we must find the volume of the cube. This is equal to side^3. 4^3=64 cubic inches. Since the pebbles are .5 pounds per cubic inch and we assume it is packed we multiply the volume by .5
This will give 32 pounds
He would have walked 5 kilometers because 12 goes into 60 5 times
Is this question
(3m)(4m)^2
If so the answer is:
48m^3
The radius of a circle should be placed in the Z section making the answer A.
