Area of Polygons

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

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 trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

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

Back

Area = 5 × 5 = 25 units²

Front

If the area of a rectangle is 36 ft² and the width is 4 ft, what is the length?

Back

Length = Area ÷ Width = 36 ft² ÷ 4 ft = 9 ft

Front

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

Back

Area = π × radius² = π × 3² ≈ 28.27 units²

Front

How do you find the area of a compound shape?

Back

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

Front

What is the area of a parallelogram with a base of 10 units and a height of 5 units?

Back

Area = base × height = 10 × 5 = 50 units²

Front

What is the area of a trapezoid with bases of 8 units and 6 units, and a height of 4 units?

Back

Area = 1/2 × (8 + 6) × 4 = 28 units²

Front

If a rectangle has an area of 50 units² and a length of 10 units, what is the width?

Back

Width = Area ÷ Length = 50 units² ÷ 10 units = 5 units