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

Answered by Joseph C. Maths tutor

2638 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

A circle has radius 6, what is its area?


How many thirds are there in 9?


Arrange the following decimals in order of size: 0.45, 1.09, 0.3, 0.08


67,854 people went to a football match. What is this number rounded to the nearest thousand?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences