Pretest

Question 1

Which expressions represent the area of triangle ABC ? Choose three correct answers.

Revolt · Accepted Answer

A: the fraction with numerator A b sine open paren 60 degrees close paren and denominator 2; C: 1 half A squared sine open paren 60 degrees close paren; E: 1 half b c sine open paren 60 degrees close paren

Question 2

To the nearest square inch, how much fabric will she use to make all three triangles?

Revolt · Accepted Answer

B: 515  square inches

Question 3

The area of triangle EFG is 34 point 8 square units. What is the perimeter of triangle EFG to the nearest unit?

Revolt · Accepted Answer

A: 29  units

Question 4

What is the area of triangle ABC ? Round to the nearest tenth of a square unit.

Revolt · Accepted Answer

D: 8 point 4  square units

Question 5

Trigonometric area formula: Area is equal to 1 half A b sine cap c

Revolt · Accepted Answer

D: 61 point 8  square units

Question 6

What is the area of triangle DEF ? Round to the nearest tenth of a square unit.

Revolt · Accepted Answer

B: 20 point 6  square units

Question 7

Which triangle’s area can be calculated using the trigonometric area formula?

Revolt · Accepted Answer

D: Image with description Triangle K L M is shown. The measure of the angle L K M is 35 degrees. The length of the sides K L and K M are 29 and 15.

Question 8

Triangle LMN has sides measuring 7 meters and 6 meters and a perimeter of 16 meters. Heron’s formula: Area is equal to square root of s open paren s minus A close paren open paren s minus b close paren open paren s minus c close paren end root What is the area of triangle LMN ? Round to the nearest square meter.

Revolt · Accepted Answer

A: 9  square meters

Question 9

Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of triangle PQR ? Round to the nearest square foot. Heron’s formula: Area is equal to square root of s open paren s minus A close paren open paren s minus b close paren open paren s minus c close paren end root

Revolt · Accepted Answer

D: 22  square feet

Question 10

What is the approximate perimeter of the parallelogram?

Revolt · Accepted Answer

C: 30  units

Pretest Answers

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