Question

the perimeter of a room is 60meters. what is the width of the room if the length is 80meters​

Answer 1

Answer:

answer will be -50 and verify it and please follow

Answer 2

$\bold{Given}\begin{cases} \sf \: The \: perimeter \: of \: a \: room \: is \: 60m \\ \\ \sf \: Length \: of \: the \: room \: is \: 12m\end{cases}$

We've to find the width of the room.

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$\bold{\underline{As \: we \: know \: that : }}$

$\boxed{\boxed{\sf\purple{\bigstar \: perimeter \: of \: a \: rectangle \: = 2(length + breadth)}}}$

Now,

$\sf:\implies \: \sf perimeter \: = 2(l + b)$

$\sf:\implies \: 60 = 2(l + b)$

$\sf:\implies \: 60 = 2(12 + b)$

$\sf:\implies \: \cancel \dfrac{60}{2} = 12 + b$

$\sf:\implies \: 30 = 12 + b$

$\sf:\implies \: b = 30 - 12$

$\sf:\implies \: b \: = \boxed{\boxed{\sf\purple{18}}}\bigstar$

$\sf\therefore{\underline{Hence, \: the \: width \: of \: the \: room \: is \: \bold{18cm}.}}$