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April 1, 2015

April 1, 2015

Posted by **D** on Monday, June 6, 2011 at 3:11pm.

- geometry -
**Reiny**, Monday, June 6, 2011 at 4:41pmAfter you sketch it, it is easy to see that you can split the area up into 2 triangle and a square, whose areas are 28, 20 and 100 , for a total of 148

or

list the coordinates in a column, repeating the first point

-4 0

10 0

10 10

0 14

-4 0

the area is (1/2)( sum of downproducts - sum of upproducts)

- (1/2)(0+100+140+0 -(0+0+0-56)

= (1/2(240 + 56) = 148

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