Question

rectangle perimeter ratiob3:7 is 136 what is the length​

Answer 1

Step-by-step explanation:

Let the sides of the rectangle be 3x and 7x.

given, perimeter = 136 cm

A/Q

perimeter of rectangle = 2(l×b)

136= 2(3x×7x)

136= 2×21x²

136/2 = 21x²

68/21 = x²