Answer:
V = A ≈ 78.54 cm3 (E)
Step-by-step explanation:
<em>Using the formulas above and additional formulas you can calculate the properties of a given circle for any given variable.
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<em>Calculate A, C, and d | Given r
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<em>Given the radius of a circle calculate the area, circumference and diameter. Putting A, C and d in terms of r the equations are:
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<em>A=πr2
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<em>C=2πr
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<em>d=2r
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<em>Calculate r, C, and d | Given A
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<em>Given the area of a circle calculate the radius, circumference, and diameter. Putting r, C, and d in terms of A the equations are:
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<em>r=Aπ−−√
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<em>C=2πr=2πAπ−−√
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<em>d=2r=2Aπ−−√
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<em>Calculate A, r, and d | Given C
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<em>Given the circumference of a circle calculate the radius, area and diameter. Putting A, r, and d in terms of C the equations are:
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<em>r=C2π
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<em>A=πr2=π(C2π)2=πC24π2=C24π
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<em>d=2r=2C2π=Cπ
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<em>Calculate A, C, and r | Given d
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<em>Given the diameter of a circle calculate the radius, area, and circumference. Putting A, C, and r in terms of d the equations are:
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<em>r=d2
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<em>A=πr2=π(d2)2=πd24
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<em>C=2πr=2πd2=πd</em>
