Question

A rectangular piece of wire with dimensions 9cm and 6.4cm is stretched and bent again to form a circle. What would the diameter of the circle be?

Answer 1

Length =9, breadth =6.4... Now, perimeter of rectangle=perimeter of circle so 2(l+b)=2x pi x r.... So.. 2(9+6.4)=2x22/7xr so 15.4=22/7xr....so r=4.9cm..so d=9.8cm....i hope this is the answer