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QuestionsWolf

  • 2 years ago

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

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  1. QuestionsWolf
    • 2 years 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
    • 2 years ago
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    Did u mean Total Surface Area?

  3. QuestionsWolf
    • 2 years ago
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    Yes.

  4. sauravshakya
    • 2 years ago
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    First Try to find the base of the right angled triangle

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

  6. sauravshakya
    • 2 years ago
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    Use pythagorean theorem

  7. QuestionsWolf
    • 2 years ago
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    How would I do that?

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

  9. SeanAcedia
    • 2 years 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
    • 2 years ago
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    Oh yes! u can use it

  11. QuestionsWolf
    • 2 years ago
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    I still don't get it.

  12. sauravshakya
    • 2 years ago
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    Now, u can directly use the formula mentioned above

  13. QuestionsWolf
    • 2 years ago
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    But I don't know what the base is.

  14. sauravshakya
    • 2 years ago
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    It is 12

  15. sauravshakya
    • 2 years ago
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    So, Find the Area of the Base

  16. QuestionsWolf
    • 2 years ago
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    Okay. how do we do that?

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

  18. QuestionsWolf
    • 2 years ago
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    so 6 * 10.

  19. sauravshakya
    • 2 years ago
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    No

  20. QuestionsWolf
    • 2 years ago
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    Then what is the height?

  21. sauravshakya
    • 2 years ago
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    Base of the triangle is 12 and height is 9

  22. QuestionsWolf
    • 2 years ago
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    so 6 * 9 = 54

  23. QuestionsWolf
    • 2 years ago
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    54 is our base now?

  24. sauravshakya
    • 2 years ago
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    Yes, thats the Area of the right angled triangle base

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

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

  27. QuestionsWolf
    • 2 years ago
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    The height of the prism is 10.

  28. sauravshakya
    • 2 years ago
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    yes

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

  30. QuestionsWolf
    • 2 years ago
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    How do we find the sides?

  31. sauravshakya
    • 2 years ago
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    The sides are 9 , 12 and 15

  32. sauravshakya
    • 2 years ago
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    Observe the figure

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

  34. sauravshakya
    • 2 years ago
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    very correct

  35. QuestionsWolf
    • 2 years ago
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    The answer is 468

  36. sauravshakya
    • 2 years ago
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    \[\checkmark\]

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

  38. sauravshakya
    • 2 years ago
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    welcome

  39. SeanAcedia
    • 2 years 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
    • 2 years 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
    • 2 years ago
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    31.4 is the circumference of the circle.

  42. QuestionsWolf
    • 2 years ago
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    Hello?

  43. QuestionsWolf
    • 2 years ago
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    Would I multiply that by 12?

  44. SeanAcedia
    • 2 years 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
    • 2 years ago
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    the same as the *

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

  47. SeanAcedia
    • 2 years ago
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    sure

  48. QuestionsWolf
    • 2 years 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
    • 2 years ago
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    Oh is it 552.64^2?

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

  51. QuestionsWolf
    • 2 years ago
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    The circumfrence is, 50.24

  52. QuestionsWolf
    • 2 years ago
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    Multiplied by 11 is, 552.64

  53. SeanAcedia
    • 2 years ago
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    ya you go the right answer

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

  55. SeanAcedia
    • 2 years ago
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    no problem

  56. QuestionsWolf
    • 2 years ago
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    I think that is all, should I close this?

  57. SeanAcedia
    • 2 years 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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