Area of a rectangle is 630 sq cm and its breadth 15 cm. Then its length is

40 cm

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60 cm

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42 cm

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35 cm

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Solution

The correct option is D 42 cm
Area of the rectangle is = $l \times b = 630$
$l \times 15 = 630$
$l = \frac{630}{15} = 42 c m .$

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