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Expert: - 4/28/2009


Question

raduis
Hello MR. Salami,
can you please take a look at the attach file. I not quite sure how to get to my answer.I hope you can show me and explain .I would grateful.here's the question . Please see the attached jepg
1-given the circle has a radius of mm, what is the length of  X
A. 4.5MM
B. 5.7MM
C. 8.5MM
D. 9.5MM


Answer
Hi Terry,
Considering the left triangle we see that the two perpendicular sides have lengths 4mm (because they are both radii) and the slant side has length x.
By the Pythagoras' Theorem,
x^2 = 4^2 + 4^2
   = 16 + 16
   = 32
x = sqrt(32)
 = 5.7 mm

Regards  
    Questioner's Rating
    Rating(1-10)Knowledgeability = 10Clarity of Response = 10Politeness = 10
    CommentThank you very much .I understand now. Great job.I hope I can come back to you in the further for understanding.


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Ahmed Salami

Expertise

I can provide good answers to questions dealing in almost all of mathematics especially from A`Level downwards. I can as well help a good deal in Physics with most emphasis directed towards mechanics.

Experience

An engineering graduate. I have been doing maths and physics all my life.

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