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trapezoid is between the two bases or in other words lies on the median of trapezoid. A trapezoid is a

quadrilateral ( a 4 sided polygon ) that has ( at least one pair ) 2 sides parallel. The formula for the centroid

of trapezoid that has parallel side a and b where the b is the base and height is h and Centroid is above b at

a distance of x is given by:

X = [(2a + b) / (3 x (a + b))] x h

m.

Base length a=5 m; b=7 m

Height h=9 m

Centre of the trapezoid X = [(2a + b)/(3 x (a + b))] x h

X = [(2(5) + (7))/(3 x ((5) + (7)))] x 9

X = [17/(36)] x 9

X = 4.25 m

m.

Base length a=6 m; b=8 m

Height h = 5 m

Centre of the trapezoid X = [(2a + b)/(3 x (a + b))] x h

X = [(2(6) + (8)) /(3 x ((6) + (8)))] x 5

X = [20 /(42)] x 5

X = 2.38 m