shelby1290
  • shelby1290
Calculate the area of the following triangle
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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shelby1290
  • shelby1290
|dw:1450338674420:dw|
shelby1290
  • shelby1290
All I've came up with so far was trying to find angle Q. 180-80-45=55 degrees
Directrix
  • Directrix
Let's try this: The area of any triangle is 1/2 the product of any two sides lengths and the sine of the angle included between them. |dw:1450339055014:dw|

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More answers

Directrix
  • Directrix
A = 1/2 * 7 * 5.5 * sin ( 80 )
Directrix
  • Directrix
@shelby1290 What did you get? Do this part first: .5 * 7 * 5.5 = ?
shelby1290
  • shelby1290
19.25
Directrix
  • Directrix
Okay. Multiply 19.25 by the sine of 80 degrees.
shelby1290
  • shelby1290
18.95
Directrix
  • Directrix
18.9575 square centimeters
shelby1290
  • shelby1290
Can that be rounded to 19 cm^2 ?
Directrix
  • Directrix
Yes. Are you asked to give the answer to the nearest integer?
shelby1290
  • shelby1290
It doesn't specify anything
Directrix
  • Directrix
Look at the answer options and if 19 is the closest option to the answer we got, then go with it.
shelby1290
  • shelby1290
In the answer key it says 19cm^2 so I'll go with that.
Directrix
  • Directrix
Okay.

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