The area of a rectangle is 40 square cm. If its breadth is 4 cm, then its length is *
Answers
The length of a rectangle is 4cm more than its breadth, if the perimeter of the rectangle is 40 cm, then what is its length and breadth?
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Let the breadth of rectangle be x cm. Hence the length of rectangle is x + 4 cm.
We know Perimeter of the rectangle
= 2 (length + breadth)
= 2 (x + 4 + x)
= 2 (2x + 4)
= 4x + 8 cm.
Perimeter of rectangle = 4x + 8 cm = 40 cm
4x + 8 = 40
4x = 40 - 8
4x = 32
x = 32/4
x = 8
Thus breadth of rectangle is 8 cm. Therefore
Length of the rectangle = x + 4 = 8 + 4 = 12 cm
Answer the dimensions of rectangle are length 12 cm and breadth 8 cm
Answer:
The area of a rectangle is 40 cm².
If its breadth is 4 cm,
then its length is(a) 20 cm.
Step-by-step explanation:
Definition: Area of rectangle is the region occupied by a rectangle within its four sides or boundaries.
The area of a rectangle depends on its sides. Basically, the formula for area is equal to the product of length and breadth of the rectangle. Whereas when we speak about the perimeter of a rectangle, it is equal to the sum of all its four sides. Hence, we can say, the region enclosed by the perimeter of the rectangle is its area. But in the case of a square, since all the sides are equal, therefore, the area of the square will be equal to the square of side-length.
Area of rectangle = Length x Breadth
A = lb
The formula to find the area of rectangle depends on its length and width. The area of a rectangle is calculated in units by multiplying the width (or breadth) by the Length of a rectangle. Lateral and total surface areas can be calculated only for three-dimensional figures. We cannot calculate for the rectangle since it is a two-dimensional figure. Thus, the perimeter and the area of a rectangle is given by:
The formula for the Area of a Rectangle
Area of a Rectangle A = l × b
The area of any rectangle is calculated, once its length and width are known. By multiplying length and breadth, the rectangle’s area will obtain in a square-unit dimension. In the case of a square, the area will become side2. The main difference between square and rectangle is that the length and breadth are equal for square.
How to Calculate the Area of a Rectangle
Follow the steps below to find the area:
Step 1: Note the dimensions of length and width from the given data
Step 2: Multiply length and width values
Step 3: Write the answer in square units
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