Question

the length of a rectangular room is twice its breadth B. the perimeter is 180 cm find the length and breadth of the room​

Answer 1

Answer:

$\blue{\bold{Given}}$

$let \: breadth \: of \: the \: rectangle \: is = x \\ now \: given \: the \: condition \\ length \: is \: twice \: of \: breadth \: so \\ length = 2x \\ given \: perimeter \: = 180cm \\ perimeter = 2(l + b) \\ 180 = 2(2x + x) \\ 180 = 2(3x) \\ 90 = 3x \\ x = 30 \\ therefore \: breadth = 30 \\ length = 60$

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