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5 February, 10:34

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. 5 February, 10:38
    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
  2. 5 February, 10:58
    0
    Answer would be D L=315 cm2; S=399 cm2
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