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21 October, 01:19

Find the volume and total surface area of a regular tetrahedron whose measure of one edge is 10cm

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Answers (2)
  1. 21 October, 01:35
    0
    The total surface area of a regular tetrahedron is calculated through the equation,

    SA = (sqrt 3) x a²

    Substituting the known value,

    SA = (sqrt 3) x (10 cm) ² = 173.20 cm²

    Its volume is obtained by,

    V = ((sqrt 2) / 12) x a³

    V = ((sqrt 2) / 12) x (10 cm) ³ = 117.85 cm³

    Thus, its surface area and volume are 173.20 cm² and 117.85 cm³, respectively.
  2. 21 October, 01:37
    0
    For a tetrahedron, the total surface area is expressed as:

    SA = √3 x a²

    Substituting the given value,

    SA = √3 x (10 cm) ² = 173.20 cm²

    The volume is expressed as,

    V = (√2 / 12) x a³

    Substituting the given values,

    V = (√2 / 12) x (10 cm) ³ = 117.85 cm³
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