Question 1025584: A rectangle is made out of unit squares as shown below. Find the total area in square units of the red shaded region.
IMAGE: CONVERT FROM asympotote
[asy]
fill((0,0)--(0,5)--(1,5)--(5,0)--cycle,red);
fill((7,0)--(1,5)--(7,5)--cycle,red);
for (int i=0;i<=7;i+=1) {
draw((i,0)--(i,5));
};
for (int j=0;j<=5;j+=1) {
draw((0,j)--(7,j));
};
draw((7,0)--(1,5)--(5,0));
[/asy]
Answer by ikleyn(52786)   (Show Source):
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