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29 August, 10:56

Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm

L = 630 cm2; S = 484.7 cm2

L = 630 cm2; S = 399.9 cm2

L = 315 cm2; S = 484.7 cm2

L = 315 cm2; S = 399.9 cm2

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Answers (2)
  1. 29 August, 11:42
    0
    Answer would be D L=315 cm2; S=399 cm2
  2. 29 August, 11:55
    0
    D) L = 315 cm2; S = 399.9 cm2

    Step-by-step explanation:

    Lateral area;

    3 * (½) (14) (15)

    315 cm²

    Surface area:

    315 + (½) (14) (14) sin (60)

    399.8704896 cm²
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