Area = $\frac12 \times 10 \times 24 = 120$ cm²

Understanding Area: How to Calculate the Area of a Rectangle with $\frac{1}{2} \ imes 10 \ imes 24 = 120$ cm²

When learning geometry, one of the foundational concepts is calculating the area of a shape — a measurable quantity representing the surface area enclosed within its boundaries. In this article, we explore a practical example of finding area using the formula for a rectangle:

\[
\ ext{Area} = \frac{1}{2} \ imes \ ext{base} \ imes \ ext{height}
\]

Understanding the Context

Given:
\[
\ ext{Area} = \frac{1}{2} \ imes 10 \ imes 24 = 120 \ ext{ cm}^2
\]

What Does This Formula Represent?

At first glance, the formula $\frac{1}{2} \ imes \ ext{base} \ imes \ ext{height}$ seems unusual for standard rectangle area calculations. However, this expression often appears in specialized geometric contexts — for instance, when dealing with triangles, where the area is typically given by:

\[
\ ext{Area of a triangle} = \frac{1}{2} \ imes \ ext{base} \ imes \ ext{height}
\]

$\( 2 \times\left(\frac{1.2 \times 10^{-5}}{4}\right)^{\frac{1}{3 ...$

Image Gallery

$\( 2 \times\left(\frac{1.2 \times 10^{-5}}{4}\right)^{\frac{1}{3 ...$

Solved: 16.If base=10 cm and heigh t=12 cm then find the area of ...

$Consider the function f(t) = \frac{1}{t}. a. Graph f(t)for t greater ...$

$If \( \frac{1}{2 \cdot 3^{10}}+\frac{2}{2^{2} \cdot 3^{9}}+\frac{3}{2 ...$

Key Insights

But in our example, the formula incorporates a factor of $\frac{1}{2}$ multiplied by 10 and 24 — suggesting the shape might not be a regular rectangle but something derived from it, such as half of a triangle’s area or part of a composite figure.

Breaking Down the Calculation

Let’s analyze the given expression:

\[
\frac{1}{2} \ imes 10 \ imes 24 = 120 \ ext{ cm}^2
\]

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Final Thoughts

Base = 10 cm
- Height = 24 cm
- Multiply base and height: $10 \ imes 24 = 240$
- Apply the $\frac{1}{2}$ factor: $\frac{1}{2} \ imes 240 = 120$ cm²

This implies either:
- The figure is a triangle with base 10 cm and height 24 cm, yielding area 120 cm²; or
- The calculation represents half the area of such a triangle, or uses a modified geometric model involving halved dimensions or projected surface areas.

Why 120 cm² Matters

The number 120 cm² appears frequently in real-world applications such as:

Calculating fabric or material requirements in sewing and tailoring
- Estimating display board areas for presentation boards
- Determining land plots or floor space in architecture
- Educational contexts for reinforcing multiplication and area formulas

Understanding how to derive 120 from $\frac{1}{2} \ imes 10 \ imes 24$ helps visualize flexible use of geometric principles beyond perfect rectangles.

Applications in Real Life

Imagine a new designer creating a triangular banner mounted on a rectangular pole base. Even if the actual visible surface is triangular, using area principles allows accurate material estimation. Similarly, in construction blueprints, visualizing derived areas supports better planning and space utilization.