A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Could someone please explain how to solve these questions in geometry? Preferably step by step please. Thanks!

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

    I shall attach the file, wait.

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

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

    the area of triangle abc = 1/2 X BC * height of the triangle = 48 (BC/2) X h = 48 h = 96/BC also by pythagoras 10^2 = (0.5BC)^2 + h^2 plug h into this last equn: 100 = 0.25BC^2 +(96/BC)^2) this reduces to 100x^2 = 0.25x^4 + 9216 let x^2 = X 100X = 0.25X^2 + 9216 Soling this gives X = 144 or 256 ie x = 12 or Answer BC = 16

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

    triangles xvz and yxz are congruent (same shape and same size) so xv = xy = 5 and yz = vz = 1. now we can form two simultaneous triangles . let vw = x and wz = y consider triangle wvz, by pythagoras: y^2 = x^2 + 1^2..........................(1) now consider triangle, by pythagoras: (5+x)^2 = (x+1)^2 + 25................(2) Solve (1) and (2) to get values of x and y x = length of vw

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

    next question area of semicircle = 1/2 * pi* 3^2 = 4.5pi area of triangle = 1/2 * CA * height CA = 6 and height = 5-3 = 2 so area of triangle = 3 * 2 = 6 Area of the whole figure is 4.5pi + 6

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

    the answer to second question is vw = 5/12

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

    for the 2nd number, what makes the 2 triangles congruent? aren't they just similar? for the 3rd number, what do you mean by CA? Thanks!

  8. 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.