Is it the coefficient of linear expansion thing I did at A level? Should it have pi in or somewhere as its a radius thing, now my head is hurting lol
Should it have pi in
The π cancels out if you're minded to go about it that way. Convert the OD to a circumference by multiplying by π, calculate linear increase in circumference, convert that back to a diameter increase by dividing by π
@midlife started
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Is it the coefficient of linear expansion thing I did at A level? Should it have pi in or somewhere as its a radius thing, now my head is hurting lol