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1)
![P = 1 + 2 = 3 (cm) \
S = 1 * 2 = 2 (cm^2) P = 1 + 2 = 3 (cm) \
S = 1 * 2 = 2 (cm^2)](https://tex.z-dn.net/?f=P+%3D+1+%2B+2+%3D+3+%28cm%29+%5C%0AS+%3D+1+%2A+2+%3D+2+%28cm%5E2%29)
2)
![r = d : 2 = 2 : 2 = 1 (cm) \
P = 2 pi r = 2 pi (cm) \
S = pi r^2 = pi (cm^2) r = d : 2 = 2 : 2 = 1 (cm) \
P = 2 pi r = 2 pi (cm) \
S = pi r^2 = pi (cm^2)](https://tex.z-dn.net/?f=r+%3D+d+%3A+2+%3D+2+%3A+2+%3D+1+%28cm%29+%5C%0AP+%3D+2+pi+r+%3D++2+pi+%28cm%29+%5C%0AS+%3D++pi+r%5E2+%3D++pi++%28cm%5E2%29)
3)
![r = d : 2 = 3 : 2 = 1.5 (cm)\
P = 0.5 * 2 + 3 + pi r = 4 + 1.5pi (cm) \
S = 0.5 * 3+ pi r^2 = 1,5 + 2.25pi (cm^2) r = d : 2 = 3 : 2 = 1.5 (cm)\
P = 0.5 * 2 + 3 + pi r = 4 + 1.5pi (cm) \
S = 0.5 * 3+ pi r^2 = 1,5 + 2.25pi (cm^2)](https://tex.z-dn.net/?f=r+%3D+d+%3A+2+%3D+3+%3A+2+%3D+1.5+%28cm%29%5C%0AP+%3D+0.5+%2A+2+%2B+3+%2B++pi+r+%3D+4+%2B+1.5pi+%28cm%29+%5C%0AS+%3D+0.5+%2A+3%2B++pi+r%5E2+%3D+1%2C5+%2B+2.25pi+%28cm%5E2%29)
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