Asked by jennifer

Need help with this
The area of a trapezoid is 240 cm2. The height is 20 cm and the length of one of the parallel sides is 10 cm. Find the length of the second parallel side
Answered by DonHo
Area of trapezoid:

A= (a+b)*h / 2

where:

a= top base
b= bottom base
h= height

note: a and be are the only parallel sides in a trapezoid

240 = (10+b)*20 / 2

solve for b
Answered by madison
240=(10+b)*20/2
Answered by Fatch Long
12 cm
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