First, read the English article below.

The formula for the area of a triangle is  A=1/2bh.    A = Area of the triangle  b = Length of the base of the triangle  h = Height of the base of the triangle You already know the area, so assign that value to A.  You should also know the value of one side length; assign that value to "'b'".  Any side of a triangle can be the base, regardless of how the triangle is drawn. To visualize this, just imagine rotating the triangle until the known side length is at the bottom. First multiply the base (b) by 1/2, then divide the area (A) by the product. The resulting value will be the height of your triangle! 

Now, please write a short abstract for it in Indonesian. Abstract:
Ingat kembali rumus luas segitiga. Perhatikan segitiga dalam soal dan tentukan variabel mana yang diketahui. Masukkan nilai yang diketahui ke dalam rumus L=1/2at dan hitung.