Concept explainers
A triangular area is bounded by a straight line in the x -y plane, as showing Fig. P9.7(a).
(a) Find the equation of the line
(b) Find the area A by
(d) No solve for x as a function of y, and recalculate the y -coordinate of the centroid G by Integration with
horizontal rectangles, as shown in Fig. P9.7(c). i.e.,
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