Posted by lily on Tuesday, October 20, 2009 at 7:43pm.
So, I need to find the area of this shape. It's an irregular shape, and I don't know how to figure it out.
The shape looks like,
15

/ 
25 /   20
/  
/  
/__________
15 15
I was told the answer was 450.
Though I don't know how to figure 450 out?

math  lily, Tuesday, October 20, 2009 at 7:44pm
Ahh. The shape didn't show.
Basically, it's a rectangle with like a triangle on the side of it.
15 on the top,
25 on the side with the triangle point, 20 on the right side,
15 on the bottom, where the triangle is.
and 15 on the bottom of the rectangle

math  lily, Tuesday, October 20, 2009 at 7:48pm
15
***********
*********/ 
********/   20
*****25/  
******/  
*****/____________
*****15*******15

math  jim, Tuesday, October 20, 2009 at 7:57pm
I'm guessing that it's a rectangle 15 across and 20 high, with a triangle on its left side, a rightangled triangle, 20 high and 15 at its base, with a hypotenuse of 25.
And you need the area.
The area of the rectangle is 15 * 20 = 300.
The area of the triangle is half the base times the perpendicular height =
(1/2) * 15 * 20 = 150.
And all that adds up to 450!
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