SOLUTION: The courtyard below was designed for an apartment complex. The outer area will be covered with grass and is 5 yards wide. The inner circle is tiled and has a diameter of 10 yards.

Algebra ->  Surface-area -> SOLUTION: The courtyard below was designed for an apartment complex. The outer area will be covered with grass and is 5 yards wide. The inner circle is tiled and has a diameter of 10 yards.       Log On


   

Question 1077615: The courtyard below was designed for an apartment complex. The outer area will be covered with grass and is 5 yards wide. The inner circle is tiled and has a diameter of 10 yards. There will also be a fence around the courtyard 2 yards out from the outer circle. 2yd The landscaper must order the fencing for the courtyard. How much should he order to the nearest tenth of a yard?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The diameter of the inner circle is +10+ yds
So, the radius of the inner circle is:
+10%2F2+=+5+ yds
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The width of outer circle plus +2+ yds is:
+5+%2B+2+=+7+ yds
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The total radius from center to the fence is:
+5+%2B+7+=+12+
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The circumference ( length of fencing ) is:
+C+=+2%2Api%2Ar+
+C+=+2%2Api%2A12+
+C+=+24%2Api+
+C+=+75.398+
The length of fencing is 75.4 yds
check the math