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

2616 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

Write these fractions from smallest to largest 1/4 , 2/3, 1/2, 2/6


Solve: 5x - 11 = 3x +3 for x


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


How many thirds are there in 8? a)3 b)24 c)9 d)22 e)4


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