The area is the same as that of a big 20 ft circle. Assuming the 20 ft refers to the diameter of the circle, its area is 314.159 sq ft (to 3 dp)
161.25 sq ft
5500 sq ft = 511 sq metres, approx. 5500 sq ft = 511 sq metres, approx. 5500 sq ft = 511 sq metres, approx. 5500 sq ft = 511 sq metres, approx.
17 feet X 20 feet = 340 sq ft 340 sq ft X 0.0929 sq meters/sq ft = 32 square meters
assuming those numbers are in feet: 10 ft * 20 ft = 200 sq. ft.
4000 sq ft divide by 20 ft = 200
1 sq yard = 9 sq ft. 12 ft x 20 ft = 240 sq ft. 240 sq ft = 26 2/3 sq yards.
(20 ft2) x (18 ft2) = 360 ft4 (360 feet to the fourth power). This number is meaningless, and has no physical significance.
12 ft * 20 ft = 240 sq ft 5 ft * 5 ft = 25 sq ft So 12 ft * 20 ft minus 5 ft * 5 ft = 240 sq ft - 25 sq ft = 215 sq ft
20 ft * 12.6 ft = 252 sq ft = 23.41 sq metres
20' x 30' = 600 600 sq' = 4.166666... sq ft
20 ft X 20 ft
20 ft * 28 ft = 560 sq ft = 52.03 sq metres.
120' x 20' = 120*20 sq ft = 2400 sq ft.
30 ft * 20 ft = 30*20 sq ft = 600 sq ft
The area is the same as that of a big 20 ft circle. Assuming the 20 ft refers to the diameter of the circle, its area is 314.159 sq ft (to 3 dp)
At 12" depth, 20 tons of gravel will cover 360 sq ft.