Pre-Test Question:

Chapter 2. Chapter 2 Area of Shapes

Math and Graphing Review
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You must read each slide, and complete any questions on the slide, in sequence.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
C.
Correct! The area of region A is 5.
Sorry, the area of region A is 5. To determine the area, try dividing the region up into a rectangle and a triangle, and then calculate each area separately. The area of the rectangle is 4 and the area of the triangle is 1.

1.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
D.
Correct! The area of region A is 300.
Sorry, the area of region A is 300. The area of triangle region A is ½ height times base, or 0.5 × 15× 40=300.

2.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
D.
Correct! The area of region A is 8.
Sorry, the area of region A is 8. To determine the area try dividing the region up into a rectangle and a triangle, then calculate each area separately. The area of the rectangle is 6 and the area of the triangle is 2.

3.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
D.
Correct! The area of region A is 4.
Sorry, the area of region A is 4. The area of triangle region A is ½ height times base, or 0.5 × 2 × 4=4.

4.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
D.
Correct! The area of region A is 4.
Sorry, the area of region A is 4. The area of triangle region A is ½ height times base, or 0.5 × 2 × 4=4.

5.

Determine the area of the shaded region labeled A in the figure below:

The area of region A is:

A.
B.
C.
D.
Correct! The area of region A is 10,000.
Sorry, the area of region A is 10,000. The area of triangle region A is ½ height times base, or 0.5 × 50 × 400=10,000.