Final answer:
To draw a perfect square or circle, the Shift key should be held down while drawing. This ensures equal sides for squares and a consistent radius for circles.
Step-by-step explanation:
To draw a perfect square or circle, you should hold down the Shift key while drawing the shape. This technique is commonly used in various graphic design and drawing software programs. Holding down the Shift key constrains the proportions of the shape, ensuring that a square's sides are all equal and that a circle has a consistent radius, creating a perfect circle. Regarding the information, the circle's area is indeed less than 4 m² because a circle inscribed in a 2-meter square would fit perfectly within it, and thus, by its nature, occupies less space than the full area of the square.