A log, Xiao Ming wrapped it around with a rope and measured exactly 9.42 decimeters, what is the radius of the cross section of this log in decimeters?
一根圆木，小明用绳绕一圈量得恰好是9.42分米，这根圆木横截面的半径是多少分米．
<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<result>1.5</result>