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Mathematics 18 Online
OpenStudy (anonymous):

Find the area of a circle whose diameter is 16 ft. 800 square ft 200 square ft 803.84 square ft 200.96 square ft

OpenStudy (joannablackwelder):

The area of a circle is πr^2

OpenStudy (joannablackwelder):

Can you find the radius?

OpenStudy (anonymous):

the radius would be half the diameter right, which is 8

OpenStudy (joannablackwelder):

Sweet. :) Now can you plug it into the formula for area?

OpenStudy (anonymous):

ok... 8x8x3.14 ok got it!

OpenStudy (joannablackwelder):

:) Good job!

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