Question

a piece of wire is in the form of a rectangle whose length and breadth are 35 cm and 31cm respectively it is rebent in the form of a circle. find the radius of a circle?

Answer 1

Answer:

Step-by-step explanation:

rectangle dimebsions:

length=35cm

breadth=31cm

perimeter=2(31+35)

=2×66

=132 cm

as length of wire not changed, perimeter(or circumference) of circle=132cm

as circumference=2×22/7×r

let radius be x

132=44x/7

44x=132×7

44x=924

x=924/44

x=21

therefore radius is 21 cm