You can only unlock the chapter using a special code that we will send you via the Viber app. Receiving a message is free of charge and with no obligations.
My phone number:
Get a code
In compliance with the law, persons under the age of 15 can enter their phone number only in the presence of a parent or guardian.
4-character (Viber) code:
Check the received code
The page will be refreshed automatically in a few seconds.
A rectangular garden has length of 10m and a width of 6m. If there is an increase in the length of the garden by 20% and decrease in the width by 15%. Calculate the difference in the area of the garden.
The detailed solution steps are locked. Click on the blue button to unlock them.
To ensure the proper functioning of the website, OpenProf uses cookies that do not store personal data. By continuing to use the website, you agree to cookies. Tell me more »
