Question

the ratio of the areas of a square and a rectangle of length15cm and breadth 9cm is 3:5 find the perimeter of the square

Answer 1

Refer the above picture for the answer :)

Answer 2

Length of rectangle =15cm

Breadth of rectangle =9cm

Ratio of area of square and rectangle is= 3:5

Let the ratios of areas be 3x and 5x

Area of rectangle

=l*b

=15*9

=135cm^2

Therefore, 5x= 135

x=135/5

x=27cm

So 3x= 3*27

3x =81cm^2

So we have to find perimeter of square, for that we first have to find its sides

Area of square= side^2

=(9)^2

Therefore sides are 9cm each (all sides of a square are equal)

So perimeter of square is 4*side

=4*9

=36cm

Hope this helps.....