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QuestionsWolf

  • one year ago

I have about 3 questions that need answer pretty quick. Please Help!

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  1. QuestionsWolf
    • one year ago
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    1. Calculate the surface area of this triangular prism. a. 255 m^2 b. 360 m^2 c. 468 m^2 d. 495 m^2

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  2. sauravshakya
    • one year ago
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    Did u mean Total Surface Area?

  3. QuestionsWolf
    • one year ago
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    Yes.

  4. sauravshakya
    • one year ago
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    First Try to find the base of the right angled triangle

  5. QuestionsWolf
    • one year ago
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    Is the formula SA =2B +(s1+s2+s3)h

  6. sauravshakya
    • one year ago
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    Use pythagorean theorem

  7. QuestionsWolf
    • one year ago
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    How would I do that?

  8. sauravshakya
    • one year ago
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    |dw:1362320690928:dw| then, 9^2 +x^2 =15^2

  9. SeanAcedia
    • one year ago
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    caCan't you just use the fact that the 12m on the bottom is parallel to the leg on the top?

  10. sauravshakya
    • one year ago
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    Oh yes! u can use it

  11. QuestionsWolf
    • one year ago
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    I still don't get it.

  12. sauravshakya
    • one year ago
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    Now, u can directly use the formula mentioned above

  13. QuestionsWolf
    • one year ago
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    But I don't know what the base is.

  14. sauravshakya
    • one year ago
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    It is 12

  15. sauravshakya
    • one year ago
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    So, Find the Area of the Base

  16. QuestionsWolf
    • one year ago
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    Okay. how do we do that?

  17. sauravshakya
    • one year ago
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    Area of traingle =1/2 base * height

  18. QuestionsWolf
    • one year ago
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    so 6 * 10.

  19. sauravshakya
    • one year ago
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    No

  20. QuestionsWolf
    • one year ago
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    Then what is the height?

  21. sauravshakya
    • one year ago
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    Base of the triangle is 12 and height is 9

  22. QuestionsWolf
    • one year ago
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    so 6 * 9 = 54

  23. QuestionsWolf
    • one year ago
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    54 is our base now?

  24. sauravshakya
    • one year ago
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    Yes, thats the Area of the right angled triangle base

  25. QuestionsWolf
    • one year ago
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    So SA =2(54) +(s1+s2+s3)h

  26. sauravshakya
    • one year ago
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    Now, Total Surface Area = 2* Area of base +(s1+s2+s3) * height of the prism

  27. QuestionsWolf
    • one year ago
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    The height of the prism is 10.

  28. sauravshakya
    • one year ago
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    yes

  29. QuestionsWolf
    • one year ago
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    SA =2(54) +(s1+s2+s3)10

  30. QuestionsWolf
    • one year ago
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    How do we find the sides?

  31. sauravshakya
    • one year ago
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    The sides are 9 , 12 and 15

  32. sauravshakya
    • one year ago
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    Observe the figure

  33. QuestionsWolf
    • one year ago
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    So, SA =2(54) +(9+12+15)10

  34. sauravshakya
    • one year ago
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    very correct

  35. QuestionsWolf
    • one year ago
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    The answer is 468

  36. sauravshakya
    • one year ago
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    \[\checkmark\]

  37. QuestionsWolf
    • one year ago
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    Thank you. Do you think you can help me with two more?

  38. sauravshakya
    • one year ago
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    welcome

  39. SeanAcedia
    • one year ago
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    Basically to find the surface area you would need to find the area of each individual 2 dimensional shape and add them together.

  40. QuestionsWolf
    • one year ago
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    2. What is the approximate length of the lateral surface for the cylinder shown here in net form? a. 31.4 in b. 62.8 in c. 78.5 in d. 376.8 in

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  41. QuestionsWolf
    • one year ago
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    31.4 is the circumference of the circle.

  42. QuestionsWolf
    • one year ago
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    Hello?

  43. QuestionsWolf
    • one year ago
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    Would I multiply that by 12?

  44. SeanAcedia
    • one year ago
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    The circumference is 31.4 which is the same lateral surface of the rectangle so you already got your answer.

  45. SeanAcedia
    • one year ago
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    the same as the *

  46. QuestionsWolf
    • one year ago
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    Okay, thanks. Can you help me with one more?

  47. SeanAcedia
    • one year ago
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    sure

  48. QuestionsWolf
    • one year ago
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    Canned fruits, vegetables, and soups have labels on the curved surface of the metal container. What is the surface area of the label on this can? That is, what is the can's lateral area? a. 88 cm^2 b. 401.92 cm^2 c. 552.64 cm^2 d. 954.64 cm^2

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  49. QuestionsWolf
    • one year ago
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    Oh is it 552.64^2?

  50. SeanAcedia
    • one year ago
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    You would find the circumference of the circle and you would multiply it by 11. the

  51. QuestionsWolf
    • one year ago
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    The circumfrence is, 50.24

  52. QuestionsWolf
    • one year ago
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    Multiplied by 11 is, 552.64

  53. SeanAcedia
    • one year ago
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    ya you go the right answer

  54. QuestionsWolf
    • one year ago
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    Thank-you. You made it so much clearer. :)

  55. SeanAcedia
    • one year ago
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    no problem

  56. QuestionsWolf
    • one year ago
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    I think that is all, should I close this?

  57. SeanAcedia
    • one year ago
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    well if i you have no more questions needed answered i suppose :P gl with your maths

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