2D Area Review

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width

Front

What is the formula for calculating the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for calculating the area of a circle?

Back

Area = π × radius²

Front

How do you find the area of a composite shape?

Back

Divide the shape into simpler shapes, calculate the area of each, and then sum them up.

Front

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

Back

Area = 5 cm × 5 cm = 25 cm²

Front

What is the area of a rectangle with a length of 10 m and a width of 4 m?

Back

Area = 10 m × 4 m = 40 m²

Front

If a triangle has a base of 6 m and a height of 3 m, what is its area?

Back

Area = 1/2 × 6 m × 3 m = 9 m²

Front

What is the area of a circle with a radius of 3 m?

Back

Area = π × (3 m)² ≈ 28.27 m²

Front

How do you calculate the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

What is the area of a composite shape made of a rectangle (5 cm by 10 cm) and a triangle (base 5 cm, height 4 cm)?

Back

Area = (5 cm × 10 cm) + (1/2 × 5 cm × 4 cm) = 50 cm² + 10 cm² = 60 cm²