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Arc AB = Diameter of coin = 3.3× 2 = 6.6 cm θ = 20 = (20/60)θ = (1/3)θ θ in radian = ((1/3) x (22/7)/540)c= ((22/7)/540)c θ = arc/radius = (22/7)/540 = 6.6/r r = (6.6 x 540)/22× 7 = 1134 cm.
Four terms are in proportion. The first, second and fourth terms are 4, 22, and 33. Find the third term.
3 2 2 3 8 ?
...31 33 69 212 ? 4286
...1 2 6 ...
13, 14, 18, 27, 43, ?
104 136 152 160 164 ?
...4 7 24 91 462 2763
18 ...
123 125 129 132 ? 145
42 43 46 ...
2342 2223 2090 1943 1782 ?
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