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a)
Dane:
H=8
r=6
Szukane:
Pc=?
Wzory:
Pc = πr² + πrl
Pp=π6²=36π
8²+6²=l²
64+36=l²
10=l
Pb=π6×10
Pb=60π
Pc=36π+60π=96π
b)
r=5
l=7
Pc=π5²+π5×7=25π+35π=60π
c)
H=6
r=2√3
6²+(2√3)²=l²
36+12=l²
√48=l²
4√3=l
Pc=π(2√3)²+π2√3×4√3
Pc=12π+24π
Pc=36π