None, since there can be no conversion.
A foot is a measure of length in 1-dimensional space while a square foot is a measure of area in 2-dimensional space. The two measure different characteristics and, according to the most basic principles of dimensional analysis, any attempt at comparisons or conversions between the two are fundamentally flawed.
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You can not get a precise answer as many width / height measurements could multiply to 550. However the square root of 550 is 23.45207879911715.
I believe there are 550 square yards to a canal, so that makes 8.8 canals / acre, but my brother-in-law says there are 26 canals / acre, which does not tie in. {| |- | 1 canal = 550 sq. yds = 4,950 sq. ft. there are 0.3048 ft / metre = 0.0929 sq. ft/m2 so 1 canal = 460 m2 1 hectare = 10,000 m2 so there are 22 canals / hectare there are 0.4047 acres / hectare so there are 8.8 canals / acre |} I believe there are 550 square yards to a canal, so that makes 8.8 canals / acre, but my brother-in-law says there are 26 canals / acre, which does not tie in. {| |- | 1 canal = 550 sq. yds = 4,950 sq. ft. there are 0.3048 ft / metre = 0.0929 sq. ft/m2 so 1 canal = 460 m2 1 hectare = 10,000 m2 so there are 22 canals / hectare there are 0.4047 acres / hectare so there are 8.8 canals / acre |}
A=Pirh 550cm = Pi (r) 24cm 550/ Pi (24) = r r = 7.3 cm V= 1/3 Pi r^2 h V= 1/3 Pi (7.3)^2 (24) V= 1339.32cm^3
usually it depends on where you are going if you are going to France from England the aircraft should travel approximately at 500/550 mph. if you are on a longer flight from England to Australia usually 600 mph. An interesting addition to this question is how slow can a plane go? RAAF pilots at their airforce base in South Australia can land planes while flying backwards. Into a strong headwind the plane can be kept airborn and can be landed while moving backwards.
The volume, v, of a cone is 1/3*pi*r2*h so r2 = 3*v/(pi*h) = 3*1232/(pi*24) = 154/pi then r = 7.0014. Area of curved surface = pi*r*(r2+h2)0.5 = pi*7.0014*(154/pi+576)0.5 = pi*7.0014*25.0004 = 549.9 sq cm The calculations become much simpler if you use the approximation pi = 22/7 r2 = 154/pi = 154/(22/7) = 154*7/22 = 49 so that r = 7 Then, r2+h2 = 49+242 = 252 So area = pi*7*25 = (22/7)*7*25 = 22*25 = 550 sq cm