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I have a math problem im confused on don't mind the pencil​

I have a math problem im confused on don't mind the pencil​-example-1

1 Answer

4 votes

Answer: 261.5 in²

Explanation:

Separate the image into three shapes:

  1. Top (Trapezoid)
  2. Middle (Rectangle)
  3. Bottom (Rectangle)

Top (Trapezoid):


A=(b_1+b_2)/(2)\cdot h\\\\\\.\ =(9+(4+6+4))/(2)\cdot 5\\\\\\.\ =(23)/(2)\cdot 5\\\\\\.\ =(115)/(2)\\\\\\.\ =\boxed{57.5}

Middle (Rectangle):


A=L* w\\.\ =6* 10\\.\ =\boxed{60}

Bottom (Rectangle):


A=L* w\\.\ =18* 8\\.\ =\boxed{144}


Area_(\ image)=Area_(\ Top)+Area_(\ Middle)+Area_(\ Bottom)\\.\qquad\qquad=57.5+60+144\\.\qquad\qquad=\large{261.5}

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