a trapezoid has an area of 20cm squared and a height of 5 cm. what is the sum of its top and bottom sides

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01-11-2014
Mathematics

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a trapezoid has an area of 20cm squared and a height of 5 cm. what is the sum of its top and bottom sides

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naǫ naǫ · Answer 1 · 2014-11-01T22:58:53+01:00

naǫ naǫ

01-11-2014

[tex]A=\frac{a+b}{2} h[/tex]
A - area
h - height
a+b - sum of its top and bottom sides

[tex]20=\frac{a+b}{2} \cdot 5 \\ 4 = \frac{a+b}{2} \\ a+b=8[/tex]

The sum of its top and bottom sides is 8 cm.

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