Jim cuts the grass every 7 days and works in the garden every 3 days. if he cut the grass and worked on the garden on june 1st, when is the next day that he will do both of these activities?

Find the least common multiplule
since they are both prime, just multiply them
3*7=21

on June 21 is when he does both

June 22nd is the answer to your question

The area of a rectangle is equal to length times width.

Mathematically, .

We can arbitrarily choose one expression for length and one for width; the result is the same.

Let's say that  cm is the length, and  cm is the width.

We simply write .

I am assuming you did not mean to write  for the first dimension.