Question

The length of rectangle is thrice its breadth and its perimeter is 48cm. Find length and breadth
of rectangle.

Answer 1

Length = 18 cm

Length = 18 cmBreadth = 6 cm

Step-by-step explanation:

$(perimeter \: = \: 2 \: \times \: (length + breadth) \\ let \: the \: breadth \: of \: the \: rectangle \: is \: x \: \\ according \: to \: the \: question \: length \: = \: 3x. \: \\ then \: 2 \times (3x + x) \: = \: 48 \: cm \\ or \: 2 \times 4x \: = \: 48 \\ or \: \: 8x \: = \: 48 \\ or \: x \: = \: \frac{48}{8} \: = \: 6 \: cm \\ hence \: breadth \: = \: 6 \: cm \\ and \: length \: = \: 3 \times 6 \:cm = \: 18 \: cm$

Answer 2

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