Area of a Triangle Formula

Find the area of ABC to the nearest tenth.

• 62.3 units²

• 124.6 units²

• 77.0 units²

• 100 units²

Tags

CCSS.HSG.SRT.D.9

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

Tags

CCSS.HSG.SRT.D.9

What is the area of a triangle with two sides that measure 5 cm and 8 cm with an included angle of 39°?

• 15.9cm²

• 12.6cm²

• 15.3cm²

• 16.2cm²

Tags

CCSS.HSG.SRT.D.9

Which formula would you use?

• Law of Sines

• Law of Cosines

• A=.5bcsinA

• Herons

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the area of this triangle?

• 14.494 meters squared
• 108.184 meters squared
• 54.092 meters squared
• 54.35 meters squared

Tags

CCSS.HSG.SRT.D.9

Which area formula works for this triangle?

• ½(5)(7)cos(49⁰)

• (5)(7)sin(49⁰)

• ½(5)(7)sin(49⁰)

• all of these

Tags

CCSS.HSG.SRT.D.9

Which of the following represents the area of this triangle.

• a.b.c

• a+b+c

• a.b.SinB

Tags

CCSS.HSG.SRT.D.9

Click on the element we need to calculate the area of this triangle. 

(you should click on more than one choice)

• sides a & b

• sides a & c

• sides b & c

Tags

CCSS.HSG.SRT.D.9

• 24

• 48

Tags

CCSS.HSG.SRT.D.9