A circular wire enclosing the area of 9,856 cm² is bent to form a square. How much area will be enclosed by that wire?
A =π × r2 ⇒ 9,856 = 22/7× r2 r2 = 9,856× 7/22 = 3136 r =√ 3136 = 56 cm Circumference = 2 π r = 2 × 22/7 × 56 = 352 cm Hence, perimeter of required square = 4a = 352 cm a = 88 cm Hence, required area = a² = 88 × 88 = 7,744 cm²
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14, 22, 34, ?, 70
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
First row- 9, 21, 124
Second ro...
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AP, DQ, HR, MS, ST, ZU, ?
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