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OpenStudy (anonymous):
What is the exact area of a circle whose diameter is 18 cm? ill give a medal
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OpenStudy (anonymous):
A≈254.47
OpenStudy (anonymous):
answer choices A. 9 straight pi cm2 B. 18 straight pi cm2 C. 36 straight pi cm2 D. 81 straight pi cm2
OpenStudy (britanyashton):
woe, woe no. there is a formula that you can use to find out yourself. A=πd
OpenStudy (tiff9702):
254.47cm²
OpenStudy (anonymous):
i keep doing it but i always get 56.52
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OpenStudy (britanyashton):
Its pi times the diamater. the diameter is 18. don't turn 18pi into a whole number, or round. unless stated you should always keep pi written as π.
OpenStudy (anonymous):
ohh the answer is 18
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