Using a variable multiple times in LESS

One variable can be used multiple times:

styles.less@var: 20px;

p {
  font-size: @var;
}
div {
  font-size: @var;
}

The result of compiling the above code will be as follows:

styles.cssp {
  font-size: 20px;
}
div {
  font-size: 20px;
}

Задание 1

Tell me what the result of compiling the following code will be:

styles.less@var: 100px;

#block {
  width: @var;
  height: @var;
}

Задание 2

Tell me what the result of compiling the following code will be:

styles.less@color: #000;

p {
  color: @color;
}
div {
  background-color: @color;
}
section {
  border: 1px solid @color;
}