Question

the length of a rectangular room is 12m.if the length of the room is double it's breadth find its perimeter​

Answer 1

Step-by-step explanation:

l =12 m

l =2b

12 =2b

b =6

perimeter = 2{ 12+6}

= 36 m answer..

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Answer 2

Answer:

36m

Step-by-step explanation:

Given,

  Length (l) = 12m

And,

   Length is double the breadth (b)

⇒ l = 2b ⇒ b = l/2 ⇒ b = 12/2 ⇒ breadth = 6m

∴ Perimeter of room = 2 ( l + b )

                                  = 2 ( 12 + 6 )

                                  = 2 ( 18 )

                                  = 36 m

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