Question

O sfera are raza 5 cm.Aria sferei este egala cu ..m²?

Answer 1

ok...........



$\mathcal{A} = 4\pi R^2 = 4\pi \cdot 5^2 = 100 \pi\ cm^2 = \dfrac{100 \pi}{10000}m^2 = 0,01 \pi \ m^2$

Answer 2

5cm =0,05 m
A sfera= 4πR²=>4*π*(0,05)²<=>A sfera=4*0,0025m²*pi=>A sfera=0,01pi m²