find the perimeter of a rectangle with sides (5x^2-7x)units and (2x^2+x) unite
Answers
Answer
In this case , you would not get the exact value , in fact you will get the value of area in terms of the variable'x ' .
So let us begin with the solution .
Length of the rectangle , denoted by 1 = ( 2x + 7 ) units
Breadth of the rectangle , denoted by b = ( x - 5 ) units
Now , We are well familiar with the formula used to calculate
the rectangle . Area of the rectangle , denoted by A = Length ( 1 ) * Breadth ( b)
A = 1 * b A = ( 2x + 7 )
( x - 5 ) A = 2x
( x - 5 ) + 7
( x - 5 )
A = 2x ^ 2 - 10x + 7x - 35 A = ( 2x ^ 2 - 3x - 35 ) sq . units
We are not given the value of'x'therefore, I cannot tell you the exact value of area.
Area of a rectangle calculator finds the area, perimeter and diagonal
Rectangles in everyday life: rectangle body shape, rectangle pool, rectangle tablecloth...
Whether you need to know the area of a carpet, a parcel, a TV screen, rectangle pool or window, this area of a rectangle calculator will solve your problem in a blink of an eye! All you have to do is input the length and width (or diagonal), and allow this rectangle calc to find the values of P (perimeter) and A (area). Keep reading if you want to understand what is a rectangle, you're interested in the rectangle definition, formulas, properties of a rectangle... Or you just want to learn how to find the area of a rectangle.
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What is a rectangle? Rectangle definition
A rectangle is a quadrilateral with four right angles. It may also be defined in another way: a parallelogram containing a right angle - if one angle is right, the others must be the same. Moreover, each side of a rectangle has the same length as the one opposite to it. It also has unequal adjacent sides, in contrast to a square which is a special case of a rectangle.
If you know some Latin, the name of a shape usually explains a lot. The word rectangle comes from Latin rectangulus. It's a combination of rectus (which means "right, straight") and angulus (an angle), so it may serve as a simple, basic definition of a rectangle.
How to find the area of a rectangle?
How to find area of a rectangle - rectangle ABCD with sides a and b anf diagonal d
The image above shows a typical rectangle. It has four sides and four right angles. The lengths of its sides are denoted with a and b, while the length of the diagonal is denoted with d.
If all sides of the rectangle have equal lengths, it is called a square.
The area of a rectangle is a space restricted by its sides, or, in other words, within the perimeter of a rectangle. To find the area of a rectangle, all you need to do is a multiplication of rectangular sides a and b:
Area = a * b
Rectangle formulas
Our rectangle calculator has the following formulas implemented:
For the area of a rectangle: A = a * b
For the perimeter of a rectangle: P = 2 * (a + b)
For the diagonal of a rectangle: d² = a² + b²