I need help with this word problem?

Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m, and the area is 224m to the second power, find the length of the other base.

I need help with this word problem?
a= 1/2 ( b1 +b2) * h

224 = 1/2 ( 20 +b2) * 16

224= 8* ( 20 +b2)

224/8 =( 20 +b2)

28 =( 20 +b2)

other base is 8
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Reply:8m
Reply:To find the area of a trapezoid, take the sum of its bases, multiply the sum by the height of the trapezoid, and then divide the result by 2. But you already know the area, height and one base, but we can use the formula to find the other base, x.



So 224=((20+x)16)/2

448=(20+x)16

28=(20+x)

8=x



The other base is 8m
Reply:You need to first start with the forumla for finding the Area of a trapezoid. [(base1 + base2) * height ] / 2 = Area



You have base1, height and area %26amp; you will want to use "x" for the length of the other base. The formula becomes



[ (20 + x) * 16 ] / 2 = 224

[ (20 + x) * 16 ] = 224 *2

[ (20 + x) * 16 ] = 448

(20 + x) = 448 / 16

(20 + x) = 448 / 16

20 + x = 28

x = 20