Question

the length of a reactangular field is 3 times its breadth if the breadth of the field is 7/2m,find the perimeter of the rectangle.

Answer 1

length = 3*breadth 

Given that breadth = 7/2

Then, length = (3*7/2) = 21/2

Now,

we know that perimeter of rectangle= 2(length+breadth)

here,

perimeter of rectangle = 2(7/2 + 21/2)

perimeter of rectangle = (2*7/2) + (2*21/2)

perimeter of rectangle = 7+21

perimeter of rectangle = 28m

i hope this will help you

-by ABHAY

Answer 2

Breadth =7/2m

Then length 3 times of breadth
3*7/2=>21/2

P=2(l+b)
=2(21/2+7/2)
=2(21+7/2)
=2(28/2)
=2*14
=28mtr