38 qts
1 gallon = 4 quarts
1 quart = 0.25 gallon
21 inches
6ft 9in in decimal feet is 6.75 feet.
If each edge of the cube is 9in long, then its dimensions are 9x9x9. So to find the volume, multiply them (9in x 9in x 9in = 729 in^3) Your answer is 729 inches cubed.
175.26 cm I used google to find the answer. Just search 'convert 5ft 9in to cm' and it gives back the result. Although google is all-knowing, it does not tell you that 5ft 9in is the same for a bear as it is for a female. (But the bear might not think so.)
9*9*6 = 486 square inches
3ft 9in = 45in (1ft = 12in)45in = 114.3cm (1in = 2.54cm)
5ft 9in
About 9in.
42in
5ft 9in
6ft 9in
9.25 x 6.75 = 62.4375 square feet.