4. Listen
   Find the missing base of the parallelogram described.
   

To find the missing base of the parallelogram, you can use the formula for the area of a parallelogram: . Given that the area is and the height is , you can rearrange the formula to solve for :

So, the missing base is .

Now, let’s not forget the fascinating historical tidbits about parallelograms! They have not only been significant in geometry but also in ancient architectural designs, with the ancient Egyptians using similar shapes in their pyramid construction to distribute weight efficiently. Geometry was integral to their designs, showcasing their mathematical prowess, which continues to astound us today!

For those who love practical applications, parallelograms are crucial in various fields, including engineering and design. They help in determining forces in structures like bridges and roofs. Engineers use the properties of parallelograms to create stable designs and efficient load distributions, proving that the math we learn can have a real impact in the world around us!