Area of a rectangle is $12 x^{2}$ square units. What is the length of the rectangle if the breadth is $3 x$ units?

units

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4 units

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Solution

The correct option is B units
Area of a rectangle = $(l e n g t h) \times (b r e a d t h)$
Given that,
$12 x^{2} = (l e n g t h) \times 3 x$
$l e n g t h = \frac{12 x^{2}}{3 x} = 4 x$ units

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Area of a rectangle is 12x2 square units. What is the length of the rectangle if the breadth is 3x units?

The correct option is B unitsArea of a rectangle = (length)×(breadth) Given that, 12x2=(length)×3x length=12x23x=4x units

Area of a rectangle is $12 x^{2}$ square units. What is the length of the rectangle if the breadth is $3 x$ units?

The correct option is B units
Area of a rectangle = $(l e n g t h) \times (b r e a d t h)$
Given that,
$12 x^{2} = (l e n g t h) \times 3 x$
$l e n g t h = \frac{12 x^{2}}{3 x} = 4 x$ units