Question

30. Multiple Choice) The breadth of a rectangle with length 12 cm
and perimeter 36 cm ist
O A. 3cm
5cm
30
O c. 12 cm​

Answer 1

Answer:

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Answer 2

Given,

• Length of rectangle = 12 cm
• Perimeter of rectangle = 36 cm

We know,

$\small \text{Perimeter of rectangle} = \rm 2(length + breadth)$

So, Applying the formula, we get,

$\bf36 = 2(12 + breadth) \\\to \tt36 = 24 + (2 \times breadth) \\ \to \tt36 - 24 = (2 \times breadth) \\ \to \tt12 = (2 \times breadth)\\ \\ \to \tt \frac{12}{2} = \frac{ \cancel2 \times breadth}{\cancel2} \\ \\\to \sf \red6 = breadth \\ \to \bf breadth = \sf \red6 \: \rm cm$