Question

t ar of ( triangle A C D r frac{1}{2} times 12 times 5 )
f) ( 30 m^{2} )
for ( a ) of ( triangle A B D r )
( S=frac{9+8+13}{2}+15 m )
( =A n cdot v quad sqrt{15 times(15-9)(15-B)(15-13)} )
f) ( sqrt{15 times 6 times 7 times 2}: sqrt{1260}=35.5 )
( A Y )
( therefore ) To tal anea ( z ) ? ( 5.5+30 )
20
Priorities
( Rightarrow 65.5 mathrm{m}^{2} )

# 7 find area of given quadrilateral ABD gr

Solution