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a circular flower bed is 20 meters in diameter and has a circular sidewalk around it that is 3 meters wide . find the area of the sidewalk in square meters . use 3.14 for pie. and round to the nearest whole number

Sagot :

Answer:

Step-by-step explanation:

this is two circles, one inside the other, circles have an area of pi*[tex]r^{2}[/tex] the flower bed is  20 meters in diameter or 10 meters in radius.

flower bed Area = 3.14*[tex]10^{2}[/tex]

flower bed Area = 314  [tex]m^{2}[/tex]

circle of sidewalk adds 3 meters

sidewalk circle area = 3.14*[tex]13^{2}[/tex]

sidewalk circle area = 530.66

subtract the flower bed area from the sidewalk area, and you have just the walk way it self.

530.66 - 314 = 216.66 [tex]m^{2}[/tex]   for the sidewalk only

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