The moon revolves around the earth at a speed of approximately 0.9 kilometers per second. This approximate speed is how many kilometers per hour?  Options:
A) 60 B) 61.2 C) 3240 D) 3,600 E) 3,672
moon revolves around the earth at a speed of 1.02kilometers per second.   one hour equal to 60 minutes.   one minute equals to 60 seconds. so one hour equals to 3600seconds.   so one hour, speed= 0.9*3600= 
<gadget id="calculator">0.9*3600</gadget>
<output>3_240</output>
3240kilometers per hour.   Option 3240 is correct
<result>C</result>
The moon revolves around the earth at a speed of approximately 0.9 kilometers per second. This approximate speed is how many kilometers per hour?