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

2640 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

A drawer contains ten identical yellow socks, eight identical blue socks and four identical pink socks. Amrita picks socks from from the drawer without looking. What is the smallest number of socks she must pick to be sure that she has at least two pairs


Solve the equation 2(3x-5)=7


How do I work out the area of a right angled triangle?


How to divide or multiply by 10s, 100s, 1000s


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