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SigmaBetaTooth · Answer 1 · 2019-03-29T12:28:28+0000

Area of the trapezoid:

(12.8 + 4.2)/(2) (4.9) = 41.65 cm^2

Area of the rectangle:
4.2 x 3.1 = 13.02 cm^2

Area of each quarter circle:

$( \pi (3.1)^(2) )/(4) = 7.54 cm^2$

We have two quarter circles:
7.54 + 7.54 = 15.08

41.65 + 13.02 + 15.08 = 69.75 cm^2

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