Because length times width equals area, 84 square inches could be something 42" x 2" or 21" x 4" or 14" x 6" or 12" x 7" or....
8.268 in.
21. 1cm = 10 mm
21 feet American.
252
Yes. it 1/3 or 0.333333
It is a prime number
2.3333
Yes, 7 X 3= 21.
28*21 equals 84
4 times 21 equals 84.
25 times 21 equals 525
How about: 1*21 = 21 or 3*7 = 21
It equals 5.25
21 times 3 equals 63
5.80 * 21 = 121.8
9 times 7/3 = 21