Luigi, the slim, green-clad younger brother of Mario, had an extraordinary task. He needed to calculate the various potential sizes of his older brother.

Mario, the rotund, red-clad plumber, was unusually heavy for his size. Luigi knew that Mario weighed 110kg and was 5.1ft tall.

Luigi started his calculations, taking into consideration Mario's weight and height. He used the square law and cubes to find the correct values.

Luigi had a hard time focusing on his task, as Mario, who was not particularly smart, kept interrupting him with his playful antics.

After enduring his brother's interruptions, Luigi finally came up with a hypothetical weight for Mario if he were to be 5.9ft tall - 245kg!

Luigi presented his calculations to Mario, who was visibly impressed by his brother's mathematical prowess, even if he didn't fully understand it.

Luigi had a growth ray that he could use to change Mario's size. Mario was hesitant, but Luigi reassured him.

After getting Mario's reluctant approval, Luigi aimed the growth ray at his brother. A bright light engulfed Mario, and he began to grow.

Mario grew until he was 5.9ft tall, the same height as Luigi. Despite being the same height, Mario was much heavier than Luigi.

Luigi was in awe of his brother's size. Mario was bigger, wider, and much heavier than before. He was a true giant.

Despite being a giant, Mario was still the same jovial, red-clad plumber. He laughed and gave Luigi a gentle pat on the head.

Luigi couldn't help but feel a little intimidated by Mario's size. However, he knew that Mario would never use his size to harm him.

Luigi's calculations were correct. Mario was indeed 245kg at 5.9ft tall. Luigi was amazed at his own mathematical skills.

Luigi used the growth ray again, this time on himself. He wanted to know how he would look at the same height and weight as Mario.

Luigi grew to the same height as Mario, but he was still much lighter. He decided not to change his weight. He liked being the slim brother.

Luigi and Mario spent the rest of the day experimenting with the growth ray. They had fun changing their sizes and comparing their weights.

At the end of the day, Luigi turned the growth ray off. He and Mario returned to their normal sizes. It was an exciting day for both of them.

Luigi learned a lot from his adventure. He discovered that he was more than just a weakling. He was a smart, capable brother who could help Mario.

Mario, despite being the heavier and stronger brother, appreciated Luigi's efforts. He thanked Luigi for helping him understand his true potential.

Luigi and Mario went to bed that night with newfound respect for each other. They promised to use their unique abilities to help each other in the future.

Luigi's grand adventure wasn't just about calculating weights and sizes. It was about discovering his own strengths and the true potential of his older brother, Mario.

The next day, Luigi and Mario woke up feeling refreshed. They were ready to face whatever adventures awaited them, knowing they could rely on each other.

Luigi was no longer afraid of being overshadowed by his bigger, stronger brother. He knew that he had his own unique abilities that made him special.

Mario, on the other hand, learned to appreciate his younger brother's intelligence. He realized that being strong wasn't the only thing that mattered.

As the sun set on another day in the Mushroom Kingdom, Luigi and Mario sat together, reflecting on their grand adventure. They were more than just brothers; they were a team.