50 meters
Explanation
you can easily solve this by using a rule of three.
Step 1
Let

x represents the length of the actual lawn
then

the proportion is the same, so
Step 2

so, the length is 50 meters
From 14-21 you have to do it by a calculator and then put it between perfect numbers then minus the bigger perfect number by it and if needed graph on a number line
I think it’s either 8 or negative 8
Answer:
me and my teacher say yes