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Co do pierwiastkow to odpowiem ale o kozie to kiedys pani mi dala i nie bylem w stanie zrobic √6+√6 =2√6 √75 - √48 =5√3 - 4√3 =√3 √8 +√2 = 2√2+√2= 3√2 √80- √20=4√5 - 2√5= 2√5

[latex]1.\R = 8 m\r = 8-6 = 2 m\\P_1 = frac{3}{4}pi R^{2} = frac{3*8^{2}}{4}pi = 48pi m^{2}}\\P_2 = frac{1}{4}pi r^{2} = frac{2^{2}}{4} pi = pi m^{2}}\\P_{c} = P_1 + P_2 = 48pi + pi = 49 pi m^{2}\\pi = 3\\P_{c} = 49*3 = 147 m^{2}[/latex] [latex]2.\\sqrt{8}+sqrt{2} = sqrt{4*2}+sqrt{2} = 2sqrt{2}+sqrt{2} = 3sqrt{2} = sqrt{3^{2}*2} = sqrt{18}\\sqrt{75}-sqrt{48} = sqrt{25*3}-sqrt{16*3} = 5sqrt{3}-4sqrt{3} = sqrt{3}\\sqrt{80}-sqrt{20} = sqrt{16*5}-sqrt{4*5} = 4sqrt{5}-2sqrt{5} = 2sqrt{5} = sqrt{2^{2}*5}}=sqrt{20}[/latex]