21 x 21 = 441 sq in or 3.06 sq ft
4.96 square feet.
No triangle can have 4 sides of measurements
53.34 cm
The diameter is 6.68 inches.
6/7
1:21 or 1/21
2/3
147 sqin
Can range from 5,000 to 65,000
10/21 is its simplest form.
Dozens of them.
a Meerkat has a body length of about 30cm plus there tail which can be about 20 cm giving it a total of 50cm (about 20-21in)