Trapezoid Area Calculation

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Что такое трапеция?

Четырехугольник с одной парой параллельных сторон

Как рассчитать площадь трапеции?

Используя формулу (b₁ + b₂)h, где b₁ и b₂ - длины параллельных оснований, а h - высота

Как можно вывести формулу расчета площади трапеции?

Путем анализа поперечных сечений трапеции, каждое из которых является прямоугольником с площадью h * ширина

Какие данные необходимы для расчета площади трапеции?

Длины параллельных оснований и высота

Если у трапеции длины параллельных оснований равны 7 и 9 единиц, а высота равна 5 единиц, какова ее площадь?

80 квадратных единиц

Как можно использовать формулу площади трапеции на практике?

Для расчета площади участков земли, имеющих форму трапеции

Study Notes

Trapezoid Summary

The article discusses the trapezoid, its subtopic areas, and various related resources. Specifically, the focus is on the area calculation of trapezoids and the application of relevant formulas.

Trapezoid Basics

A trapezoid is a quadrilateral with one pair of parallel sides. Its area can be found using the formula (b₁ + b₂)h, where b₁ and b₂ are the lengths of the parallel bases, and h is the height. This formula can be derived from the analysis of the cross-sections of the trapezoid along the direction perpendicular to the parallel sides, where each section is a rectangle with an area of h times the width. By summing these rectangular areas along the length of the trapezoid, we obtain the total area ().

Area Calculation

To calculate the area of a trapezoid using this formula, follow these steps:

  1. Measure and record the lengths of both parallel bases (b₁ and b₂).
  2. Determine the height (h) perpendicular to the parallel sides.
  3. Use the formula (b₁ + b₂)h to find the area.

Example Problem

Suppose you have a trapezoid with a base length of 7 units and another base length of 9 units. The height of the trapezoid is 5 units. To find the area, use the formula:

Area = (7 units + 9 units) * 5 units Area = 16 units * 5 units Area = 80 square units

So, the area of the trapezoid is 80 square units.

Learn about trapezoids, their properties, and how to calculate their area using the formula (b₁ + b₂)h. Includes steps for area calculation and an example problem to illustrate the process.

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