Question

If the rectangular sheet 3:7 and its perimeter 144m find its side

Answer 1

Let the sides be 3x and 7x


Now,

Perimeter =2(Lenght+breadth)

But, perimeter is given, So

144 =2(3x+7x)

144/2 =10x

72 =10x

72/10 =x

7.2 =x


Then, Sides are 3*7.2 =21.6 m

And 7*7.2 =50.4 m




I hope this will help you


-by ABHAY

Answer 2

Let the side be x
as they are in ratio :- then side will be 3x and 7x

Perimeter = 2 ( length + breadth )

144 = 2 ( 3x + 7x )

72 = 10x

7.2 = x

Length be 3x = 3 × 7.2 = 21.6m
breadth be 7x = 7 × 7.2 = 50.4m