Odpowiedzi

2010-03-11T20:39:43+01:00
L²=²r+h²
l²=3²+8²
l²=9+64
l²=√73 cm
Pc=πr²+πrl
Pc=π3²+π3√73
Pc=(9π+9√73π)cm²
2010-03-11T20:42:25+01:00
Pc= ?
Pp=2 pi R
Pp=2* pi *3 = 6 pi
Pb= Pi* r* l
l=? 3 kwadrat+ 8 kwadrat = l kwadrat
9 + 64 = l kwadrat
pierwiastek z73 = l kwadrat
l= 8.5


Pb= Pi* 3*8,5 = 25.5 pi
Pc = 25,5pi+6 pi = 31,5 pi