Sonja made 20 hamburgers. each hamburger contained 1/4 pound of ground beef.
how much ground beef did sonja use to make the hamburger

a. 4 pounds

b. 5 pounds

c. 10 pounds

d. 80 pounds

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube