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If the origin is the centroid of the tri...

If the origin is the centroid of the triangle PQR with vertices `P (2a , 2, 6)`, `Q ( 4, 3b , 10)`and `R(8, 14 , 2c)`, then find the values of a, b and c.

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To find the values of \(a\), \(b\), and \(c\) such that the origin is the centroid of the triangle with vertices \(P(2a, 2, 6)\), \(Q(4, 3b, 10)\), and \(R(8, 14, 2c)\), we will use the formula for the centroid of a triangle in three-dimensional space. ### Step 1: Write the formula for the centroid The coordinates of the centroid \(G\) of a triangle with vertices \(P(x_1, y_1, z_1)\), \(Q(x_2, y_2, z_2)\), and \(R(x_3, y_3, z_3)\) are given by: \[ G\left(\frac{x_1 + x_2 + x_3}{3}, \frac{y_1 + y_2 + y_3}{3}, \frac{z_1 + z_2 + z_3}{3}\right) \] ...
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Knowledge Check

  • If origin is the centroid of the triangle with vertices P(3a, 3, 6), Q (-4, 2b, -8) and R(8, 12, 2c), then the value of a, b, and c are

    A
    `4/3, 1, 2`
    B
    `-4/3,-15/2,1`
    C
    `3, 2, -4/5`
    D
    `4/3, 15/2, 1`
  • The centroid of the triangle with vertices A(2, -3, 3), B(5, -3, -4) and C (2, -3, -2) is the point

    A
    (-3, 3, -1)
    B
    (3, -3, -1)
    C
    (3, 1, -3)
    D
    (-3, -1, -3)
  • lf origin is centroid of triangle with vertices (a, 1 , 3), (- 2, b, -5) and (4, 7, c), then (a, b, c) equiv

    A
    (2, 2,8)
    B
    (- 2,8,2)
    C
    (- 2,-8,- 2)
    D
    (-2, -8,2)
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