14.20
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1420.5
Convert to the same units, then the comparison and calculation can be made. 1 cm = 10 mm → 142 cm = 142 × 10 mm = 1420 mm 1420 > 1240 → the person 142 cm is taller. 1420 - 1240 = 180 mm → they are 180 mm = 180 ÷ 10 cm = 18 cm taller.
Volume of a cube is four thirds x pi x r^3 which in this case = 972 so r^3 = 972/(4pi/3) Take pi as 355/113 so 4 pi/3 = (4 x 355)/(113 x 3) = 1420/339 r^3 = 972 x 339/1420 = 232.048 r = 6.145 yds
1420.5
All multiples of 20, namely: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480, 500, 520, 540, 560, 580, 600, 620, 640, 660, 680, 700, 720, 740, 760, 780, 800, 820, 840, 860, 880, 900, 920, 940, 960, 980, 1000, 1020, 1040, 1060, 1080, 1100, 1120, 1140, 1160, 1180, 1200, 1220, 1240, 1260, 1280, 1300, 1320, 1340, 1360, 1380, 1400, 1420, 1440, 1460, 1480, 1500, 1520, 1540, 1560, 1580, 1600, 1620, 1640, 1660, 1680, 1700, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980, 2000, ...