In triangle ABC, side AB is 12dm and height CK is 18dm, find the area of triangle ABC.

triangle ABC, СK – height, AB – base, AB = 12 dm, СK = 18 dm.

Find: the area of the triangle.

Solution: use the formula for the area of a triangle

S = 1/2 * a * h; a = AB, h = CK

S = 1/2 * 12 * 18 = 108 dm2

Answer: the area of the triangle = 108 dm2



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.