Oblicz pole powierzchni całkowitej stożka o tworzacej l i promieniu podstawy r jeżeli
a) l=7cm, r= 4cm
b)l=8cm, r=3cm
c)l=9cm, r=5cm
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Pc = πr^2 + πrl
a) Pc =π * 4^2 + π*4*7
Pc = 16π + 28π
Pc = 44π
b) Pc =π * 3^2 + π*3*8
Pc = 9π + 24π
Pc = 33π
c) Pc =π * 5^2 + π*5*9
Pc = 25π + 45π
Pc = 70π