Law of Cosines and Heron's Formula

What is the area of a triangle with two sides that measure 6 m and 8 m with an included angle of 137°?

• 17.8m²

• 14.6m²

• 16.4m²

• 12.9m²

Calculate the length of AC

• 30

• 24

• 27

• 35

Solve for x.

• 24.3

• 155.7

• 24.3 and 155.7

• not possible.

To approximate the length of a marsh, a surveyor walks 425 meters from point A to point B. Then the surveyor turns 65º and walks 300 meters to point C. Approximate the length AC of the marsh.

• 250

• 615

• :)

• Not me

Find the missing side.

• 15.9 in.

• 22.8 in.

• 19.2 in.

• 521.1 in.

What is the correct set up to find side p?

8.Solve for x

• 3.85

• 4.25

• 3.35

• 5.65

Using Heron's Formula, find the Area.

• 91

• 52.3

• 57.4

• 53.3

Using Heron's Formula, find the Area.

• 10 mi²

• 10.3 mi²

• 8 mi²

• 8.2 mi²

Using Heron's Formula, find the Area.

• 55.1 km²

• 60 km²

• 61 km²

• 73.2 km²