Question

Please answer this question i will mark u qs brainlist​

Answer 1

Answer:

Let breadth be x m

11=3x-1

12=3x

x=4

Breadth=4m

Perimeter=2(l+b)

=2(11+4)

=2×15

=30m

Answer 2

Step-by-step explanation:

3b - 1 = length

3b - 1 = 11

therefore,

3b = 11 - 1

3b = 12

therefore,

b = 12/3

b = 4 m

perimeter of the floor = l×b

11×4

44 m

hence, the perimeter of the floor is 44m.