When it is 4:00 a.m. in London, it is 11:00 a.m. in Hanoi. If you leave Hanoi at 7:45 a.m. on Friday and fly to London over the
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It is given that the circumference of the circle is 19.5 inches. Let the diameter is d inches .
And the formula of circumference is
Substituting the value of C, we will get
When the diameter increased by 3, then the circumference is
And the circumference , when diameter is increased by 3 is 29 inches .