Zadanie
Uzupełnij tabelę
P_p=\pi r^2
P_b=2\pi r h
P_c=2P_p+P_b
Walec 1
r=1 h=1
P_p=\pi \cdot 1^2=\pi
P_b=2\pi r h=2\pi \cdot 1\cdot 1=2\pi
P_c=2P_p+P_b=2\cdot \pi +2=4\pi
Walec 2
r=2 h=3
P_p=\pi \cdot 2^2=4\pi
P_b=2\pi \cdot 2\cdot 3=12\pi
P_c=2\cdot 4\pi + 12\pi =\pi (8+12)=20\pi
Walec 3
r=0,5, h=4
P_p=\pi \cdot (\frac{1}{2})^2=\frac{1}{4}\pi
P_b=\not2^1\pi \cdot \frac{1}{\not2^1}\cdot 4=4\pi
P_c==\not2^1\cdot \frac{1}{\not4^2}\pi +4\pi =\pi (\frac{1}{2}+4)=4\frac{1}{2}\pi
Walec 4
r=4 h=0,5
P_p=\pi \cdot 4^2=16\pi
P_b=2\pi r h=2\pi \cdot 4 \cdot 0,5=2\pi \cdot 2=4\pi
P_c=2P_p+P_b=2\cdot 16\pi +4\pi= \pi (32+4)=36\pi
Walec 5
r=11 h=10
P_p=\pi \cdot 11^2=121\pi
P_b=2\pi \cdot 11\cdot 10=210\pi
P_c=2\cdot 121\pi+220\pi=\pi (242+220)=462\pi