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

A rectangle has an area of 48 cm² and a length of 8 cm. What is its width?

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If 3x = 81, what is the value of x?

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A train 150 m long passes a pole in 15 seconds. What is its speed?

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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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What is the probability of drawing an ace from a standard deck of 52 cards?

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If x^2 + 4x + 4 = 0, what is the value of x?

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If 8x = 512, what is the value of x?

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If the sum of the squares of two consecutive positive integers is 365, what are the integers?

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The LCM of two numbers is 60, and their HCF is 5. If one of the numbers is 20, what is the other number?

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A sphere has a radius of 7 cm. What is its volume?

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