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10. Find the area of the shaded region.

17 yd
5 yd
7 yd
6 yd
7 yd
4 yd

10. Find the area of the shaded region. 17 yd 5 yd 7 yd 6 yd 7 yd 4 yd-example-1
User Mherzig
by
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1 Answer

3 votes
3 votes

Answer:

176 yd²

Explanation:

You want the shaded area of a parallelogram that has a trapezoid-shaped white area.

Parallelogram area

The area of a parallelogram is given by the formula ...

A = bh

The parallelogram shown has a base of 17 yd and a height of 7 yd +6 yd. Its area is ...

A = (17 yd)(7 yd +6 yd) = 221 yd²

Trapezoid area

The area of the white space cut from the parallelogram is given by the formula ...

A = 1/2(b1 +b2)h

where b1 and b2 are the parallel bases of the trapezoid, and h is the distance between them.

A = 1/2(7 yd +8 yd)(6 yd) = 45 yd²

Shaded area

The shaded area is the difference of these two areas:

shaded area = 221 yd² -45 yd² = 176 yd²

The area of the shaded region of the parallelogram is 176 yd².

User Lavrik
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