tolong bantu no 14 dan 15 pake cara

15.
cari sisi miring segitiga menggunakan rumus phytagoras
A2 = √B2+C2
A2 = √15(2) + 8(2)
= √225+64
A2 = √289
A = 17

Keliling = a+b+c
= 17+16+17
= 50
Jawaban= B

14.
S = a+b+c÷2
= 8+16+12
= 36÷2 = 18
L = √s(s-a) (s-b) (s-c)
= √18(18-8)(18-16)(18-12)
= √18(10)(2)(6)
= 12√15
Jawaban = C
semoga membantu