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LP=2πr(r+t)=2x22/7x0,7(0,7+10)= 7,48
b.LS=2πRT=2x3,14x10x1,8=113,04
LP=2πr(r+t)
=2x3,14x10(10+1,8)
=74,6
c.LS=2πrt
7536=2x3,14x30xt
7536=188,4t
t=40
LP=2πr(r+t)
=2x3,14x30(30+40)
=13.188
D.LS=2πrt
22.608=2x3,14xrc24
22.608=150,72r
r=22.608:150,72
r=150
LP=2πr(r+t)
=2x3,14x150(150+24)
=163,908
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