The formula for the circumference of a circle is &pi * D, where D is the diameter of the circle.
Let D1, D2, D3, D4, D5, D6
and D7 be the diameters of the
seven circles. Then, the sum of circumferences of the seven circles would
be
π * (D1
+ D2 + D3
+ D4 + D5
+ D6 + D7).
Since
D1
+ D2 + D3
+ D4 + D5
+ D6 + D7
= 60 cm.
The sum of
circumferences of the seven circles is (π *
60) cm. or around 188.5 cm.
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