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[tex]\mathcal{A} = 4\pi R^2 = 4\pi \cdot 5^2 = 100 \pi\ cm^2 = \dfrac{100 \pi}{10000}m^2 = 0,01 \pi \ m^2[/tex]
[tex]\mathcal{A} = 4\pi R^2 = 4\pi \cdot 5^2 = 100 \pi\ cm^2 = \dfrac{100 \pi}{10000}m^2 = 0,01 \pi \ m^2[/tex]
5cm =0,05 m
A sfera= 4πR²=>4*π*(0,05)²<=>A sfera=4*0,0025m²*pi=>A sfera=0,01pi m²
A sfera= 4πR²=>4*π*(0,05)²<=>A sfera=4*0,0025m²*pi=>A sfera=0,01pi m²