Area of circumcircle of a ∆ = πR 2 =π(a/√3) 2 = π(28√3/√3) 2 =π × 282 = 22/7 × 28 × 28 = 2464 cm 2
2, 6, ?, 20, 30, 42
58 69 56 ? 54 73
5 6 15 40 89 170 ?
Choose the missing term.
R, U, X, A, D,?
10, 18, 53, 115, 204, ?
143 119 107 101 98 ?
23 40 67 104 ? 208
13, 29, 65, 129, ?, 373
78, 80, 84, ?, 108, 140
119 × 13 + 150/100 × 850 =?
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