Topic Details (Notes format)

How to Calculate the Area of a Rectangle

Subject: Mathematics

Book: Maths Mastery

Rectangles form the basis of countless geometric and real-life applications, from plotting out rooms to determining the surface area of rectangular objects. The area formula is A = length × width. For example, a 12 m by 8 m rectangle has an area of 96 m². This simple calculation underlies more complex designs, such as floor plans or packaging materials. Grasping rectangular area helps you swiftly compute how much paint to buy for a wall or how large a garden bed is, making it indispensable in practical problem-solving.

Practice Questions

The area of an equilateral triangle with side length 6 cm is:

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The ratio of two numbers is 3:5, and their sum is 64. What are the numbers?

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The sum of the squares of two consecutive integers is 145. What are the integers?

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What is the remainder when 5^100 is divided by 3?

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A man invests Rs. 5000 at 5% per annum simple interest. What is the total amount after 3 years?

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The sum of the reciprocals of two numbers is 1/4. If one number is 12, what is the other?

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A man spends 75% of his income and saves Rs. 600. What is his total income?

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How many ways can 4 people sit in a row?

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The base of a triangle is 10 cm and its height is 6 cm. What is its area?

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If a cylinder has a radius of 7 cm and height of 10 cm, what is its volume?

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