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A rock has a diameter of .5 miles. If you walk around it at a rate of 2 miles per hour, how long will it take you to walk all the way around the rock? Use 3.14 as pi.

Guest May 5, 2015

Best Answer 

 #1
avatar+109 
+10

Solve for radius:

C = 2(3.14)r

C = 2(3.14)(0.5/2)

C = 1.57-miles

 

Solve question asked:

(1.57 miles) / (2 miles/hour)

0.785-hours or 47-minutes and 6-seconds

isilber17  May 5, 2015
 #1
avatar+109 
+10
Best Answer

Solve for radius:

C = 2(3.14)r

C = 2(3.14)(0.5/2)

C = 1.57-miles

 

Solve question asked:

(1.57 miles) / (2 miles/hour)

0.785-hours or 47-minutes and 6-seconds

isilber17  May 5, 2015
 #2
avatar+92624 
0

Great answer isiber17 :)

That is one BIG rock  LOL

Melody  May 6, 2015

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