Math Calculators, Lessons and Formulas

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$V=4R^{2}\pi$

$V=\dfrac{4}{3}R^{3}\pi$

$V=\dfrac{4}{3}R^{2}\pi$

$V=\dfrac{1}{3}R^{2}\pi$

$A=\pi\dfrac{81^{2}}{4\cdot \pi^{2}}$

$A=4\pi\dfrac{81^{2}}{4\cdot \pi^{2}}$

$A=2\pi\dfrac{81^{2}}{4\cdot \pi}$

$A=4\pi\dfrac{81^{2}}{ \pi^{2}}$

$A=64\pi m^{2}$

$A=128 m^{2}$

$A=128\pi^{2} m^{2}$

$A=256\pi^{2} m^{2}$