None. It is graphite not lead in a pencil.
How much graphite in a pencil? About 2/3 cubic inch (=6" x pi * (3/16)^2)
Divide 4.6 lbs by the lead density in lbs/cubic inch
244.5 (rounded)
According to my calculations, 2.44 in3 of lead would weigh one pound.
1,728 cubic inches.
There are 1,728 cubic inches to the cubic foot
There are 1,728 cubic inches in a cubic foot.
14.8 cubic feet = 25,574.4 cubic inches.
1728 cubic inches = 28316.8 cubic centimeters
2.81 cubic inches.
That is 79.33 cubic inches.
111.92 cubic inches.
There are about 8,640 cubic inches in five cubic feet.