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The lateral area of a cone is 400 pi cm^2. The radius is 10 cm. Find the slant height to the nearest tenth.

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  1. well, a = πrs, so s = a/(πr) = 400π/10π = 40.0

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    👤
    oobleck
  2. oobleck is correct. I took a quiz with this question and it is 40. Thx oobleck!

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  3. GEOM B U6 L3 Surface Areas of Pyramids and Cones
    1. A, 24

    2. B, pentagon

    3. A, 76 m²; 244 m²

    4. B, 671 m²; 725 m²

    5. A, 216π in.²

    6. A, 72 ft²

    7. C, 650 m²

    8. C, 6.9 mm

    9. D, 19 m

    10. A, 40 cm

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  4. Yeah, whoever is above me(no idea how to abbriviate that name lol) is correct.

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  5. his answer is definitely right! Just took the quiz, and got 100%!! Thank you!!

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  6. I personally had a question the same but with different numbers. it was 603 pi cm^2 LA and radius 26 cm. the answer was 23.2

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  7. Surface areas of pyramids and cones quiz
    1. Use Euler's formula...V=14..E=36.. answer= a-24
    2. Pierre built the model.. answer=b-pentagon
    3. Use formulas to find... answer= a- 76m^2; 244m^2
    4. Use formula to find... answer= b-671m^2; 725 m^2
    5. Find the surface area...cylinder... answer= a- 216 pi inches^2
    6. for the following question...surface area...regular pyramid.. answer= a- 72ft^2.
    7. for the following question...surface area.regular pyramid..answer=c-650m^2
    8. Find the slant height... pyramid...answer=c=6.9mm ...haha 69
    9. Find the slant height...cone...answer=d-19m
    10. The lateral area of a cone...answer=a-40cm

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