Find the area of a right-angled triangle with legs: AB = 30mm BC = 4cm express the area of this triangle

Find the area of a right-angled triangle with legs: AB = 30mm BC = 4cm express the area of this triangle in square millimeters KN = 5cm, NM = 600mm express the area of this triangle in square centimeters. FL = 70m, LD = 60dm

The area of a right-angled triangle is found by the formula: S = 1 / 2a * b. That is, it is equal to half the product of the legs of the triangle.

1. AB = 30 mm, BC = 4 cm = 40 mm;

S = 1/2 * 30 * 40 = 600 mm ^ 2;

2. КN = 5 cm, NM = 600 mm;

NM = 600mm = 60cm;

S = 1/2 * 5 * 60 = 150 cm ^ 2;

3. FL = 70 m = 700 dm;

S = 1/2 * 700 * 60 = 21000 dm ^ 2.