If the area of a rectangle is A, why is the area of a rectangle with lengths twice as long not 2A?

This is because you are doubling both the length of the rectangle and its width. If it were extended by a factor of 2 in only one direction then its are would be 2A. Extending it in the other direction as well gives dimentions of 22A=4A. Generally, when a shape with area A has its directions increased by a factor of n then the resultant area of the shape is nnA or (n^2)A

JC
Answered by Joseph C. Maths tutor

2835 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

Express (4x)/((x^2) - 9) - (2)/(x + 3) as a single fraction in its simplest form (4 marks)


How do I add fractions?


Mr. A divided our cake so I got 2/5th of it. If remaining cake was divided equally among 5 more friends so each got 150g, what was the weight of full cake?


Solve this quadratic equation by factorising: x^2-x-6=0


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning