Question

.a wire is in the form of rectangle 12.8 centimetre long and 9.2 cm wide is bent into the form of circle find the radius of circle ​

Answer 1

Step-by-step explanation:

area of rectangle = 9.2× 12.8=116.76

area of circle= 22/7× r2

116.76=22/7× r2

1167×7/22= r×r

Answer 2

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 = 66/2π

r = 66×7/2×22

r = 21/2

r = 10.5 cm