ted sells his homemade peanut butter for 1.60 a jar at the local farmers Market the jar is 8 cm in diameter and 10 cm high he decides he will also sell peanut butter in jats that are 16 cm in diameter and 20 cm high.What should he charge if he uses the same price per cubic centimeter

Answer 1

volume of current jar
= π(4^2)(10) = 160π cm^3

new jar:
volume = π(8^2)(20) = 1280π

set up a ratio, where x is the new cost

x/1.6 = 1280π/(160π)
x = 1.6(1280)/160 = 12.80

(notice the new jar is 8 times the volume of the smaller jar, so the cost is 8 times the original cost)

Answer 2

Ted sells his homemade peanut butter for
$1.60 a jar at the local Farmers’ Market.
The jar is 8 cm in diameter and 10 cm high.
He decides he will also sell peanut butter in
jars that are 16 cm in diameter and 20 cm
high. What should he charge if he uses the
same price per cubic centimetre?