Question

given p: 7 cm q : 6 cm area of quadrilateral​

Answer 1

Answer:

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Step-by-step explanation:

Area quadrilateral ABCD= area of triangle ABC+area of triangle ACD

ar△ABC=

s(s−a)(s−b)(s−c)

,s=

2

a+b+c

=

2

9+6+7

=11㎝

∴ar△ABC=

11(11−9)(11−6)(11−7)

=

11×2×5×4

=2

110

㎠

=10.48×2=20.96㎠

ar△ACD=

s(s−a)(s−b)(s−c)

,s=

2

a+b+c

=

2

15+9+12

=18㎝

∴ar△ACD=

18(18−15)(18−9)(18−12)

=

18×3×9×6

=

6×3×3×9×6

=3×3×6=54㎠

∴