The area of a rectangular board is 36 ${c m}^{2}$ . If its breadth is 4 cm, what is the length of the board?

26 cm

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4 cm

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9 cm

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12 cm

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Solution

The correct option is C
9 cm

Given, area of the rectangular board = 36 cm²

Breadth of the rectangular board = 4 cm
Area of a rectangle = length $\times$ breadth
Substituting values of area and breadth, we get
36 = length $\times$ 4
$\Rightarrow \frac{36}{4}$ = length
$∴$ Length of the rectangular board = 9 cm.

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