student-name

Naira Maisara asked in Math

How do I do this?

Thank You
student-name

Josepaul Paulachan answered this

Dear Student 
Let
length = l
breadth= b
Given , b = (1/3)×l
Now 
a)
Perimeter  = P
P = 2(l+b)
P= 2(l+(1/3)l)
P= 2(4/3)×l
P= (8/3)l
Therefore 
Ratio of length to perimeter = l:P = 3/8
b)
Given breadth = 15cm
Length ,l = 3b = 3×15=45cm

Regards