Tolong bntu jwb kka...pakai cara!

Tolong bntu jwb kka…pakai cara!

Luas bangun ABCD ( jajar genjang) = 2 luas segitiga BCD
$t = sqrt{ {10}^{2} - {6}^{2} } \ = sqrt{64} = 8$
=
$= 2 : frac{ (a times t)}{2} \ = a times t \ = 12 times 8 = 96$

luas bangun AEB (segitiga)
$t = sqrt{ {13}^{2} - {5}^{2} } \ t = sqrt{169 - 25} \ t = sqrt{144} \ t = 12$
$frac{a times t}{2} \ frac{10 times 12}{2} = 60$

= 98+60
=156 cm