The formula used to calculate the perimeter of a rectangle is explained below. For example, if you need to decorate the border of your rectangular notebook, you can easily calculate how much ribbon you would need by finding the perimeter or if you need to put a fence around your garden, the perimeter of the garden will give you the exact length of wire you would need. It can be taken as the sum of the total measure of the length and width of the rectangle and it is expressed in linear units like cm, inches, and so on. The perimeter of a rectangle is the length of the total boundary of a rectangle. The formula for the area of a rectangle whose length and width are 'l' and 'w' respectively is the product of its length and width, that is: Thus, the area of a rectangle can be calculated when its sides (length and width) are known. Thus, the Area of the rectangle = 12 square inches. Since the unit of this rectangle is given in inches, the area is measured and written in square inches. We have already learned that area is measured in square units. How many squares can you observe? There are 12 squares in all. Now, count the number of unit squares in the below figure. Each unit square is a square of length 1 inch. Let us draw unit squares inside the rectangle. For example, let us consider a rectangle of length 4 inches and width 3 inches. We can use the formula of the area of a rectangle to find the space occupied by these objects.
Some examples of rectangular shapes are the flat surfaces of laptop monitors, blackboards, painting canvas, etc. In other words, the space occupied by a rectangle is the area of the rectangle. math/spoken/here/2class/80/math.The area of a rectangle is the number of unit squares that can fit into a rectangle. The volume of a rectangular pyramid, V(l,w, h)= lwh/3. The volume of a rectangular prism, V(l,w, h)= lwh. Rewrite the fraction as a decimal or integer number. The distance formulas used for a line, a plane, or in space. The area of a trapezoid, A(b 1, b 2, h)=Įach point is named by one, two, or three Press button to obtain the computed measure.
) to degrees (based on a circle's angle measure of 360°).Ĭlick on the image below to see an enlargement of the formulas that are used here. Radians page also has a calculator to convert from radians (based on a circle's angle measure of 2 In the list of units shown below and the other images, the conversion formula is visible. Radians make these formulas MUCH easier and clearer, this part of the page uses only degrees to measure angles and builds the conversion from degree to radian into the formulas. In terms of diameter, The area, in terms of radius, or The circumference, in terms of radius, or Circles are describe in terms of theirĬircumference is the perimeter of a circle.
Since all sides of a square are the same length, the length equals the width, L = W. Enter negatives as "-x" rather than "- x"Ģ.
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