Respuesta :

joshlind3
Area of a parallelogram = bh

The base is 20 and the height (given in the triangle) is 10

The area of the parallelogram is 200 square inches

The area of a triangle is 1/2bh

The base is 9 and the height is 20

The area of it is 90 square inches

200-90 square inches = 110 square inches left





Americ
Find the area of the parallelogram, find the area of the triangle, then subtract the triangle's area from the area of the parallelogram.

Area of Parallelogram:
A= base * height
A= 20 in * 10 in
A= 200 in^2

Area of Triangle:
A= 1/2 base * height
A= 1/2 (10 in)(9 in)
A= 1/2 (90)
A= 45 in ^2

Area of Poster Left:
subtract the difference
A= Parallelogram Area - Triangle Area
A= 200 in^2 - 45 in^2
A= 155 in^2

ANSWER: 155 in^2 is the area of the poster board she has left.

Hope this helps! :)

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