Question

a wire is in the form of a rectangle 18.7cm long and 14.3cm wide. if this wire is reshaped to form a circle, find the radius and area of the circle​

Answer 1

Step-by-step explanation:

Perimeter of rectangle=(18.7+14.3)×2=33×2=66 cm

Circumference of circle= perimeter of rectangle

⇒2πr=66

⇒r=

2π

66

⇒r=

2

66

×

22

7

⇒r=

2

21

∴r=10.5 cm

So, radius of circle =10.5 cm

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