Question
A circle is inscribed in a square of side 28 cm. The
area of the remaining portion of the square which is not enclosed by the circle is.Solution
Radius of the circle = 28/2 ⇒ 14 cm Required area of remaining portion = Area of square - Area of circle = (Side)² - πr² ⇒ (28)² - 22/7 × 14 × 14 ⇒ 784 - 616 ⇒ 168
Find the wrong number in the given number series.
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40, 56, 85, 129, 190, 268
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2, 5, 9, 14, 20, 28 95, 139, 191, 251, 319, 380
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27, 38, 52, 70, 94, 122 Find the wrong number, in the given number series,
1680, 840, 2520, 630, 3150, 475
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1, 2, 6, 24, 120, 600 15, 27, 51, 99, 193, 387
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8, 12, 24, 60, 180, 540