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A semi-circle of radius 8 cm, rocks back and forth along a line. The distance between the line on which the semi-circle sits and the line above is 12 cm. As it rocks without slipping, the semi-circle touches the line above at two points. (When the semi-circle hits the line above, it immediately rocks back in the other direction.) What is the distance between these two points, in millimetres, rounded off to the nearest whole number?

 Jun 20, 2019
 #1
avatar+10413 
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A semi-circle of radius 8 cm, rocks back and forth along a line. The distance between the line on which the semi-circle sits and the line above is 12 cm. As it rocks without slipping, the semi-circle touches the line above at two points. (When the semi-circle hits the line above, it immediately rocks back in the other direction.) What is the distance between these two points, in millimetres, rounded off to the nearest whole number?

laugh

 Jun 20, 2019
 #2
avatar+101856 
0

Very nice, Omi....!!!

 

 

cool cool cool

CPhill  Jun 20, 2019

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