Question

length and breath of a piece of tectangular wire are 18 cm and 15cm it is bent into shape of a circle find the diameterof the circle

Answer 1

l=18cm ,b=15cm.
Acc. to question
perimeter of rectangle=circumference
2(l+b)=2πr
l+b=22/7×r
33×7/22=r
r=21/2cm
d=21cm