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Let radius of circle is ‘r’ cm And, length of the side of square is ‘a’ cm So, 22/7 × r2 = 308 Or, r2 = 98 cm Or, r = 7√2 cm So, Length of diagonal of square = √2 × a = 7√2 So, a = 7 cm Perimeter of square = 7 × 4 = 28 Perimeter of rectangle = 18/7 × 28 = 72 cm Hence, option d.
46.2 × 8.4 × 3 + ? = 1200
63- [22-{24 ÷ 3-(9-15 ÷ 5) ÷ 6}]=?
14 × 6 + 9 × 11 = (82 – 3) × ?
(12% of 1250 + 85% of 400) x 10 = ?2
∛21952 × 44 = ? × 14
`sqrt(5476)` + 40% of 1640 = ?`xx` 4 - 2020
654.056 + 28.9015 × 44.851 – 43.129 = ?
212 + 14 × 23 – 28 × 15 = ?
?3 - 25 × 11 = 30 - 15 × 12