Poster segitiga dengan tinggi 12m jika luas poster 90m² brp alasnya mencari alasnya
L = 1/2 × a × t
90 = 1/2 × a × 12
90 = 12/2 × a
90 = 6a
a = 90/6
a = 15
Poster segitiga dengan tinggi 12m jika luas poster 90m² brp alasnya mencari alasnya
L = 1/2 × a × t
90 = 1/2 × a × 12
90 = 12/2 × a
90 = 6a
a = 90/6
a = 15