Area Of Rectangle And Square
Perimeter and Area of Class 7
The space inside the edge is called the area of the figure. The area of a figure can also be called the surface of the figure. When we talk about carpeting ,flooring, grass in garden or anything that covers the space inside an edge.
We can calculate the area of different shapes.
If we have to find the area of a square, we need to calculate how much space there is inside the edge of the square. We can use a formula to help us with this calculation.
A = s.s
In this formula, the dot means multiplication. To figure out the area of the square we multiply the side times the side.
A = 6 ft . 6 ft
Here is what the problem looks like. Next, we multiply.
A = 6 . 6
A = ft .ft
Here we are multiplying two different things. We multiply the actual measurement 6 ´ 6 and we multiply the unit of measurement too, feet ´ feet.
A = 6 x 6 = 36
A = ft x ft = sq.ft or ft2( Remember this )
Think about the work that we did with exponents. When we multiply the unit of measurement, we use an exponent to show that we multiplied two of the same units of measurement together.
Now in the similar way we can find the area of a rectangle, we are going to use the measurements for length and width.
Let’s look at an example and then figure out the area of the rectangle using a new formula.
Here we have a rectangle with a length of 5 meters and a width of 3 meters. Just like the square, we are going to multiply to find the area of the rectangle. Here is our formula
A = lw
To find the area of a rectangle, we multiply the length times the width.
A = (5m)(3m)
A = 5 x3
A = meters x meters
Here we have 5 meters times 3 meters.
We multiply the measurement part 5 x 3, then we multiply the units of measure.
Our final answer is 15 sq.m or15 m2 (Remember This ).