Topic Details (Notes format)

How to Calculate the Diagonal of a Cuboid

Subject: Mathematics

Book: Maths Mastery

For a cuboid (rectangular prism), the space diagonal that stretches from one vertex to the opposite vertex is given by d = √(L² + W² + H²), where L, W, and H are length, width, and height. For instance, if a box is 3 m × 4 m × 12 m, the diagonal is √(3² + 4² + 12²) = √(9 + 16 + 144) = √169 = 13 m. This formula is used in warehouse logistics (checking if a box can fit diagonally), 3D geometry tasks, and advanced engineering designs requiring precise spatial measurements.

Practice Questions

If a+b = 10 and ab = 21, what is the value of (a-b)^2?

View Question

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

View Question

What is the length of the diagonal of a square with a side length of 7 cm?

View Question

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

View Question

What is the area of a sector of a circle with radius 14 cm and central angle 90°?

View Question

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

View Question

If the ratio of two numbers is 3:5 and their HCF is 4, what are the numbers?

View Question

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

View Question

A cube has a side length of 4 cm. What is its volume?

View Question

What is the cube of 4?

View Question