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

What is the square root of 144?

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If log(100) = 2 and log(10) = 1, what is log(1000)?

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If two complementary angles differ by 30°, what are the angles?

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If x = 3 and y = 4, what is the value of x^2 + y^2?

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If the sum of three consecutive integers is 96, what are the integers?

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The perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?

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What is the value of x if 3x + 7 = 16?

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If the angles of a triangle are in the ratio 2:3:4, what is the measure of the largest angle?

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

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A square is inscribed in a circle with a radius of 5 cm. What is the area of the square?

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