Rectangle Area and Perimeter Calculator
Rectangle Area and Perimeter Calculator
Enter the lengths of sides a and b to find:
- Rectangle area:
A = a × b - Rectangle perimeter:
P = 2 × (a + b)
What is a rectangle?
A rectangle is a quadrilateral with four right angles. Opposite sides are equal and parallel.
Rectangle formulas:
- Area: A = length × width
- Perimeter: P = 2 × (length + width)
- Diagonal: d = √(a² + b²)
Real-world applications:
- Room area calculation
- Garden planning
- Material estimation
- Floor and wall measurements
Frequently Asked Questions
How to find the area of a rectangle?
Formula: A = a × b. For example, if a = 5 m, b = 3 m, then area: 5 × 3 = 15 m².
How to find the perimeter of a rectangle?
Formula: P = 2 × (a + b). For example, with a = 5, b = 3: P = 2 × (5 + 3) = 16 m.
What units are used for area and perimeter?
Area is measured in square units (m², cm²), perimeter in linear units (m, cm).
What's the difference between area and perimeter?
Area measures the space inside the rectangle, perimeter measures the distance around its edges.