Question

Tolong ya yang bisa.... (pake cara) jangan ngasal. terimakasihhh.

Answer 1

AB = Hypotenusa = 



=12^2 + 9^2
= 144+81
=Akar 225
=15 cm...
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AD = jari jari  lingkaran...

Jari Jari luar lingkaran =R

R= a*b*c / 4L
 =12*9*15 / 4*  Akar ((s(s-a)(s-b)(s-c))

=

s= (a+b+c)/2
s= 12+9+15=36/2 = 18 cm

4 * Akar ( 18 (18-12) (18-9) (18-15) = Akar (18(6*9*3))

4 * Akar ( 18(162)
4 * Akar(2916)
4 * 54
=216 cm^2..............
1620/216 = 7.5 cm
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AD = 7.5 cm
 AD+BD=AB(15 cm)
AD=15-7.5
AD=7.5 cm