Tolong jawab ya.. (fastrespon) yang nomor 5
Jawaban Terkonfirmasi
Δ BAC siku siku di A
AB = 12, AC = 16, BC = √(12²+16²) = 20
r = 1/2 (BC)= 1/2(20) =10
Luas ΔBAC = 1/2 a t = 1/2 (12 x16)= 96
luas 1/2 ling = 1/2 ( π r²) = 1/2 ( 3,14 x 100) = 157
luas arsiran = luas 1/2 keliling – luas Δ BAC = 157 – 96 = 61