All Exams Test series for 1 year @ ₹349 only
Question

A rectangular room can be partitioned into two equal square rooms by a 7-meter-long partition. What is the floor area of the rectangular room in m²?

The correct answer is

98

Solving the Rectangular Room Area Problem

The problem describes a rectangular room that is divided into two equal square rooms by a partition that is 7 meters long. Understanding how this partition is placed is key to finding the dimensions of the rectangular room and its area.

Understanding the Partition and Square Rooms

When a rectangular room is divided into two equal square rooms by a partition, the partition must be placed parallel to one pair of sides. Since the two resulting rooms are squares and are equal, the partition must split the longer side of the rectangle into two equal segments, each equal to the length of the shorter side.

  • The partition's length is given as 7 meters.
  • This partition creates two equal square rooms.
  • The partition acts as one side of each of these square rooms.
  • Therefore, the side length of each square room is 7 meters.

Determining Rectangular Room Dimensions

Based on the side length of the square rooms, we can determine the dimensions of the original rectangular room:

  • The width of the rectangular room is equal to the side length of the square rooms. So, the width is 7 meters.
  • The length of the rectangular room is made up of the sides of two square rooms placed side-by-side along that dimension. So, the length is twice the side length of a square.

Let $s$ be the side length of a square room.

Given partition length = $s = 7$ m.

Dimensions of the rectangular room:

  • Width = $s = 7$ m
  • Length = $2 \times s = 2 \times 7$ m = 14 m

Calculating the Floor Area of the Rectangular Room

The floor area of a rectangular room is calculated using the formula: Area = Length $\times$ Width.

Using the dimensions we found:

Area = Length $\times$ Width

Area = $14 \text{ m} \times 7 \text{ m}$

Area = $98 \text{ m}^2$

Thus, the floor area of the rectangular room is 98 m².

Rectangular Room Area Revision Table

Concept Description Value (for this problem)
Partition Length Length of the divider creating the squares. 7 m
Side of Square Room Length of one side of the equal square rooms. 7 m
Rectangular Room Width The shorter dimension of the rectangular room. 7 m
Rectangular Room Length The longer dimension of the rectangular room (twice the square side). 14 m
Rectangular Room Area Length multiplied by Width. 98 m²

Additional Information on Geometric Area Calculations

Understanding basic geometric shapes and how to calculate their areas is fundamental in many problems like this. Here are some related concepts:

  • Square: A quadrilateral with four equal sides and four right angles. Area = side $\times$ side = $s^2$.
  • Rectangle: A quadrilateral with four right angles. Opposite sides are equal in length. Area = length $\times$ width = $l \times w$.
  • Area Units: Area is measured in square units, such as square meters (m²), square centimeters (cm²), square feet (ft²), etc. This represents the amount of two-dimensional space a shape covers.
  • Partitioning Shapes: Complex shapes can often be broken down into simpler shapes (like squares, rectangles, triangles) to calculate their total area. In this case, a rectangle was composed of two squares.

Being able to visualize how shapes are related and how partitions affect dimensions helps solve geometry problems efficiently.

Was this answer helpful?

Important Questions from Area and Perimeter

  1. The circumference of a circular field is 396 m and that of the other circular field is 132 m. Find the area (in m²) of the third circular field whose radius is the sum of the radii of the first two fields. (Take π = 22/7)

  2. Who won the T20 Cricket World Cup 2022 held in Australia?

  3. If the circumference of a circle is increased by 20% then the area of the circle will be increased by:

Need Expert Advice?

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App