# SOLUTION: You walk 45 degrees around the circumference of a circle that has a radius of 4 meters. To the nearest tenth, you have walked &#61485; A 1 m B 3.14 m C 6.28 m D 12.6 m

Algebra ->  -> SOLUTION: You walk 45 degrees around the circumference of a circle that has a radius of 4 meters. To the nearest tenth, you have walked &#61485; A 1 m B 3.14 m C 6.28 m D 12.6 m      Log On

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 Click here to see ALL problems on Circles Question 598272: You walk 45 degrees around the circumference of a circle that has a radius of 4 meters. To the nearest tenth, you have walked  A 1 m B 3.14 m C 6.28 m D 12.6 mAnswer by math-vortex(472)   (Show Source): You can put this solution on YOUR website!Hi, there-- . To find the distance around a circle you find the circumference. . The circumference formula is . where C is the circumference and r is the radius of the circle. . Substitute 45 for r in the equation. Do not round pi until the end of the problem. . Simplify. . So, if you walked all the way around this circle you would walk 8*pi meters (a little more than 24 m). However you only walk 45 degrees around. We need to know what fraction of the circle that represents. . There are 360 degrees in a full circle, so 45 degrees represents . If you walk around 1/8 of the circle you walk 1/8 of the total circumference. . You will walk pi meters. A good approximation for pi is 3.14. B is the correct answer. (one minor detail...3.14 is the best answer, but it is not rounded to the nearest tenth. That would be 3.1 meters.) . Cheers! Ms.Figgy math.in.the.vortex@gmail.com