find the area of the figure (using Heron's Formula)
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In triangle AED
S=8+8+10/2
S=26/2
S=13
area=✓s(s-a)(s-b)(s-c)
area=✓13*(13-8)(13-8)(13-10)
area=✓13*5*5*3
area=5✓39
In triangle DCB
S=8+8+10/2
S=26/2
S=13
area=✓s(s-a)(s-b)(s-c)
area=✓13*(13-8)(13-8)(13-10)
area=✓13*5*5*3
area=5✓39
In triangle DAB
S=10+10+12/2
S=32/2
S=16
area=✓s(s-a)(s-b)(s-c)
area=✓16(16-10)(16-10)16-12)
area=✓16*6*6*4
area=✓2*2*2*2*6*6*2*2
area=2*2*6*2
area=48
Total area=5✓39+5✓38+48
=5*6.24+5*6.24+48
=110.4
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