China Naming Network - Company naming - Tie 7 cylindrical objects side by side and find out how long the rope is. It is known that the diameter of each circle is 1 cm.
Tie 7 cylindrical objects side by side and find out how long the rope is. It is known that the diameter of each circle is 1 cm.
if it's a long line like that, it's easier to calculate.
just add 12 diameters to the circumference of a circle.
it is 1*3.14+12*1=151.4 cm.
in real life, it's all tied up like the picture below.