What was x, what were they working out ... Last time of asking, pls post the actual question.
I cant post the question because he never wrote it down. He did the working out. X is the radius. he used the formula for the area of the circle. Instead of R he used x.
I cant post the question because he never wrote it down. He did the working out. X is the radius. he used the formula for the area of the circle. Instead of R he used x.
That working does not correspond to a 3% reduction in R or x. The first line does not do that. Similarly, I could probably reverse engineer what they calculate at the end whether its absolute error or percentage or its wrong, but it would be better for you to ask your teacher. An answer without a question is meaningless.
The two examples in the book are correct and fully explained. The first deals with area, the second with volume (obviously similar but different). I suggest you follow the first one and contact your teacher about their question/working.
That working does not correspond to a 3% reduction in R or x. The first line does not do that. Similarly, I could probably reverse engineer what they calculate at the end whether its absolute error or percentage or its wrong, but it would be better for you to ask your teacher. An answer without a question is meaningless.
The two examples in the book are correct and fully explained. The first deals with area, the second with volume (obviously similar but different). I suggest you follow the first one and contact your teacher about their question/working.