anonymous
  • anonymous
An isosceles trapezoid has base angles of 45° and bases of lengths 9 and 15. The area of the trapezoid is 36 sq. units 67.5 sq. units 72 sq. units I got 36 sq. units. is this correct @debbieG
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@satellite73 is this right? I think I did it right...lol
Jack1
  • Jack1
|dw:1434765270292:dw| is this right?
Jack1
  • Jack1
\(\Large Area = \frac{a+b}2h\) a = 9 b = 15 h = ...?

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Jack1
  • Jack1
|dw:1434765513049:dw|
anonymous
  • anonymous
But I didn't receive a height??? I'm so confused.
anonymous
  • anonymous
And where did you get 3???
Jack1
  • Jack1
|dw:1434765645811:dw|
Jack1
  • Jack1
2 isosceles triangles, each with 45 degree angles... so they myst be 1:1:sqrt 2 triangles
anonymous
  • anonymous
So how do you figure out the answer?
Jack1
  • Jack1
|dw:1434765804138:dw|
Jack1
  • Jack1
so height = 3 \( \Large Area=\frac{a+b}2 \times h\) a = 9 b = 15 h = ...3 area = 36
anonymous
  • anonymous
So I plugged it into the formula, and I got 36. So I am correct?
anonymous
  • anonymous
Thank you :)
Jack1
  • Jack1
yep perfect no problems dude ;)

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