Area of Rectangle
Area of Rectangle
The area of a rectangle is calculated in units by multiplying the width (or breadth) by the Length (or Height) of a rectangle.
The formula for the Area of a Rectangle = length x breadth
The area of any rectangle is calculated once its length and width are known.
Illustration: Find the area of the rectangle whose length is 15 cm and the width is 4 cm?
Solution: Given, Length = 15 cm and Width = 4 cm
Area of a rectangle = Length × Width = 15 × 4 = 60 sq cm
So the area of rectangle =
Illustration: Given that the area of recatngle is 75 sq cm. if one side is 5 cm find the other side.
Solution: One side of the rectangle = 5cm , Let the other side of the rectangle = y cm
Area of rectangle = Length X breadth = 5 X y sq cm
According to the question: Area of rectangle = 75 sq cm
OR 5 X y = 75 sq cm
Hence the other side = 15 cm
Illustration: Find the area of rectangle whose dimensions are given below.
Length = 12.5 cm , Breadth = 50 cm
Solution: Area of the rectangle = Length × Width
= 12.5 X 50
Hence, Area of the rectangle is .
What change in percent is made in the area of rectangle by decreasing its length and increasing its breadth by 5%? | |||
| Right Option : C | |||
| View Explanation | |||
Neeta wants to put a mirror on a wall whose length is 36.5 cm and breadth is 15cm. How much will she spend on it if the cost of the mirror is Rs. 1 per sq. cm.? | |||
| Right Option : A | |||
| View Explanation | |||
By how much is the area of rectangle of 5 X 3 cm decreased, when its longer side is decreased by 3 cm ? | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
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