Question

A piece of wire
in the form of a rectangle 8.6 cm long and 5.7 cm broad, is reshaped into the form
of a circle. Find the diameter of the circle. ​

Answer 1

Answer:

9.1cm is the answer

Step-by-step explanation:

firstly firstly the viral is in rectangular shape so find the perimeter of the rectangle

perimeter=2(l+b)

=2(8.6+5.7)

=2×14.3

=28.6cm

therefore ,circumference of the reshaped circle will be 28.6cm.

2πr=28.6

πr=28.6/2

πr=14.3

22/7×r =14.3

r=14.3×7/22

r=1.3×7/2r=9.1/2

Answer 2

Answer:

your answer is here...

Step-by-step explanation:

perimeter of rectangle = 2 (8.6+5.7)

=28.6 cm

here,

perimeter of rectangle = perimeter of circle

circumference of circle = 28.6cm

2 x 22/7 x r = 28.6cm

radius. =4.55

2×radius = diameter

2×4.55=9.10

DIAMETER =9.10cm

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