Math question?

How many feet of fencing should be purchased to enclose a circular flower garden that has a diameter of 18ft. Round to the nearest tenth of a foot.


Hint: I think you have to use circumfrence/diameter equation.


Please show your equation and how you figured it out to help me please. Thanks so much!

Math question?
Here, you have to use the circumference equation.





Circumference = pi*diameter





Just substitute 18 feet for the diameter





Circumference = pi*18 feet





Circumference is about 56.54866776 feet.
Reply:d=18


thus, r=9





circumference= 2r(pi)= 2(9)(3.142)=56.556ft


nearest to tenth of a foot = 56.6 ft
Reply:The radius is half of the diameter.





The cirumference of a cirlce is equal to 2pi times the radius.





You can do the maths I%26#039;m sure :)
Reply:Since you are enclosing a round flower garden, your circumference formula is correct: C = pi (d) where d is the diameter of the circular garden.


You know that the diameter (given as 18 ft).


C = pi (d)


most texts use 3.14 as an approximation for pi but I don%26#039;t know what your teacher wants you to use. If 3.14, then


C = 3.14 (18)


C = 56.52 feet of fencing.


But if anywhere in the problem it said you could not purchase a fraction of a foot, then you would need 57 feet of fencing.




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