A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

hi, How you would answer this; "A syringe to be used for drawing a sample of blood has a diameter of 20mm and a length of 5cm. Calculate the volume of blood in the syringe in mm3 when the syringe is full." I got 1.57*10^-5 mm but the options given are all In *10^3 mm. Help please

  • This Question is Closed
  1. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    convert all measurement to read the same.. cm ->mm or the other way around; then use the formula for the volume of a cylnder: V = pi(r^2)h where r = half the diameter, and h= the length of the needle.

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, I did that and come to the answer 1.57*10^-5 mm3 However, the choices given are: a 1.57 x 10^3 mm3 b 6.28 x 10^3 mm3 c 15.7 x 10^3 mm3 d 62.8 x 10^3 mm3

  3. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    50mm = 5 cm? is that right? pi(10^2)(50)?

  4. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    15707 mm^3 is what I get, move the decimal "3" places to get the other jargon... 15.7 x10^3

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh thanks. Cos I changed them into meters then converted them Must have converted it wrong

  6. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    always remember, the exponent of the "10" tells you how many decimal places to move..... and meters? wow.... :)

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    XD .. I know lol. I have a few other problems, do I make a new post or post it here?

  8. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    new post seems better, more people can see it then..

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thanks again

  10. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.