in a quadrilateral ABCD AB=12 BC=7 CD=22 DA=5 It is also known as integer find AC
Answers
Answered by
0
10
17
+54)sq cm
R.E.F image
ar(ABCD)=ar(ABC)+ar(ACD)
for Δ(ADC)
Use heron's formula
S=
2
15+12+9
=18cm
ar(ABC)=
S(S−a)(S−b)(S−c)
ar(ABC)=
18×3×6×9
=54cm
||ly for Δ(ACB)
S=
2
15+12+7
=17
ar(ABC)=
17×(17−15)(17−12)(17−7)
=10
17
cm
2
⇒
ar(ABCD)=(10
17
+54)cm
2
Similar questions