Area of Triangles and Parallelograms

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

What units are used to measure area?

Back

Square units (e.g., cm², m², ft²)

Front

If a triangle has a base of 10 cm and a height of 5 cm, what is its area?

Back

Area = 1/2 × 10 cm × 5 cm = 25 cm²

Front

If a parallelogram has a base of 8 m and a height of 3 m, what is its area?

Back

Area = 8 m × 3 m = 24 m²

Front

What is the area of a right triangle with legs of 6 m and 8 m?

Back

Area = 1/2 × 6 m × 8 m = 24 m²

Front

How do you find the area of a triangle if you only know the lengths of all three sides?

Back

Use Heron's formula: Area = √[s(s-a)(s-b)(s-c)], where s = (a+b+c)/2

Front

What is the area of a rectangle with a length of 12 ft and a width of 4 ft?

Back

Area = length × width = 12 ft × 4 ft = 48 ft²

Front

What is the area of a square with a side length of 5 cm?

Back

Area = side × side = 5 cm × 5 cm = 25 cm²

Front

If a triangle has an area of 30 m² and a base of 10 m, what is its height?

Back

Height = (Area × 2) / base = (30 m² × 2) / 10 m = 6 m