The length of a rectangle is $4 a$ metres and its area is $72 a^{2}$ sq m, the breadth of the rectangle is :

12a

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24a

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18a

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72 a

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Solution

The correct option is C
18a

Let the breadth of the rectangle be $b$ m.
Area of rectangle = $l e n g t h \times b r e a d t h$

$\Rightarrow 72 a^{2} = 4 a b$
$\Rightarrow b = \frac{72 a^{2}}{4 a}$
$\Rightarrow b = 18 a$

The breadth of the rectangle is 18a metres .

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The length of a rectangle is 4a metres and its area is 72a2 sq m, the breadth of the rectangle is :

The correct option is C 18a Let the breadth of the rectangle be b m. Area of rectangle = length × breadth ⇒72a2=4ab ⇒b=72a24a ⇒b=18a The breadth of the rectangle is 18a metres .

The length of a rectangle is $4 a$ metres and its area is $72 a^{2}$ sq m, the breadth of the rectangle is :

The correct option is C
18a

Let the breadth of the rectangle be $b$ m.
Area of rectangle = $l e n g t h \times b r e a d t h$

$\Rightarrow 72 a^{2} = 4 a b$
$\Rightarrow b = \frac{72 a^{2}}{4 a}$
$\Rightarrow b = 18 a$

The breadth of the rectangle is 18a metres .