Heron's Formula and Law of Cosines

Use Law of Cosines to find XZ.

• 16.004 meters

• 54.165 meters

• 34.7 meters

• 1204.165 meters

Find the area of the triangle

• 72 meters squared

• 88 meters squared

• 144 meters squared

• 70.2 meters squared

What is the length of side x?

• 98cm

• 112 cm

• 150 cm

• 105 cm

Find angle A

• 53.6

• 13.3

• 10.1

• 24.4

What is the length of side x?

• 6.57 cm
• 7 cm
• 7.44 cm
• 26.33 cm

A triangle with two sides that measure 6 m and 8 m with an included angle of 137°. What is the measure of the third side?

• 17.8m

• 14.6m

• 13.0m

• 12.9m

If the sides of a triangle are 3, 4, and 5, what is the area?

• 6

• 6.28

• 12

• 3.14159

Tags

CCSS.6.G.A.1

If the sides of a triangle are 3, 9, and 10, what is the area?

• 13.3

• 15.75

• 124.62

Tags

CCSS.6.G.A.1

Find BC

• A
• B
• C
• D

Find m<B

• A
• B
• C
• D