Area of rectangles and parallelograms

Learning Objectives Define area and identify its standard units. Accurately calculate the area of any given rectangle using the formula A = length × width. Accurately calculate the area of any given parallelogram using the formula A = base × height. Identify the base and perpendicular height of a parallelogram. Solve real-world problems involving the area of rectangles and parallelograms. Explain the relationship between the area formula for rectangles and parallelograms. Ever wondered how much paint you need for a wall or how much carpet for a room? 🤔 It all comes down to understanding 'area'! In this lesson, you'll discover how to measure the space inside flat shapes, specifically rectangles and parallelograms. Learning about area is a fundamental skill th...

TermDefinitionExample AreaThe amount of two-dimensional space a flat surface or shape covers, measured in square units.If a square has sides of 1 cm, its area is 1 square centimeter (1 cm²). RectangleA quadrilateral (a four-sided polygon) with four right (90-degree) angles. Opposite sides are equal in length and parallel.A typical door, a sheet of paper, or a football field are all rectangular shapes. ParallelogramA quadrilateral with two pairs of parallel sides. Opposite sides are equal in length, and opposite angles are equal.A tilted rectangle, or a rhombus (which is a special type of parallelogram). Base (of a parallelogram)Any one of the sides of a parallelogram that is chosen to be the 'bottom' side for area calculation. It's often the side the parallelogram appears t...

Area of a Rectangle $$A = l \times w$$ To find the area (A) of a rectangle, multiply its length (l) by its width (w). This formula works because a rectangle can be thought of as rows of square units. Area of a Parallelogram $$A = b \times h$$ To find the area (A) of a parallelogram, multiply the length of its base (b) by its perpendicular height (h). This formula is derived from cutting a triangular section from one end and moving it to the other to form a rectangle.