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[null,null,1]
[null,null,null,null,null,null,null,null,null,null,null,null,"buitendiameter ",null,100,"cm"]
[null,null,{"$f":"ROUND(PI() * 100 * (C2^2 - C3^2) / (4 * C4) / 1000, 3)","v":0},null,null,null,null,null,null,null,null,null,"binnendiameter",null,90,"cm"]
[null,null,null,null,null,null,null,null,null,null,null,null,"dikte",null,0.1,"cm"]
[]
[null,null,null,null,null,null,null,null,null,null,null,null,"= 1 laag van diameter 95 cm",null,null,"= 0,95*3,14",{"$f":"\"=\"& 0.95*PI()","v":"=2,9845130209103"}]
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[null,null,null,null,null,null,null,null,null,null,null,null,"en niet ",1.492]
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[]
[null,null,null,null,null,null,null,null,null,null,"buiten diameter",null,null,100,"cm"]
[null,null,null,null,null,null,null,null,null,null,"binnendiameter",null,null,50,"cm","ruimte tussen binnen-en buitendiameter",null,null,null,{"$f":"N14&\"-\"&N15","v":"100-50"},{"$f":"N14-N15","v":50},"cm"]
[null,null,null,null,null,null,null,null,null,null,"dikte",null,null,0.1,"cm","dikte *2 (0nderkant en bovenkant)",null,null,"10/2",null,0.2,"cm"]
[null,null,null,null,null,null,null,null,null,null,"aantal omwikkelingen",null,null,null,null,null,null,null,null,null,{"$f":"U15/U16","v":250}]
[null,null,null,null,null,null,null,null,null,null,"gemiddelde omtrek",null,null,"binnen+buiten /2",null,null,null,null,null,null,{"$f":"(N14+N15)/2","v":75}]
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[null,null,null,null,null,null,null,null,null,null,"lengte = gmi.omtrek *aantal Wik.*3,14",null,null,null,null,null,null,null,null,null,{"$f":"U18*U17*PI()","v":58904.86225480862}]
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[null,null,null,null,null,null,null,null,null,null,"of in 1 formule",null,null,null,null,null,null,null,null,null,{"$f":"(((N14-N15)/(N16*2))*((N14+N15)/2)*PI())/100","v":589.0486225480862},"m"]