784
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98 = (9 x 101) + (8 x 100) or (9 x 10) + (8 x 1)
98 = (9 x 10) + (8 x 1)
1 x 98 = 98 2 x 98 = 196 3 x 98 = 294 4 x 98 = 392 5 x 98 = 490 6 x 98 = 588 7 x 98 = 686 8 x 98 = 784 9 x 98 = 882 10 x 98 = 980 11 x 98 = 1078 12 x 98 = 1176
Let the height be x:- If: 0.5*(8+20)*x = 98 square units Then: x = 98*2/8+20 => x = 7 Therefore height of the trapezoid is: 7 units Check: 0.5*(8+20)*7 = 98 square units
98 x 8 = 784