Radius and Circumference Concepts

In 'Circumference and the Dragon of Pi,' Radius embarks on a quest to cure his father, Circumference, who has turned into a dragon after drinking a potion. Through his journey, Radius discovers the mathematical relationship between a circle's circumference and diameter, known as Pi. Using this knowledge, he successfully transforms his father back to human form, leading to a grand celebration of his discovery.

Who are the main characters introduced at the beginning of the story?

• Lady Di and Sim

• Circumference and Radius

• Circumference and Lady Di

• Radius and Sim

What causes Circumference to double over in pain?

• A knight's challenge

• A potion mishap

• A stomach ache

• A dragon attack

What does Radius mistakenly give to Circumference?

• A sleeping potion

• A fire-belly potion

• A healing potion

• A strength potion

Who does Radius seek help from after the potion mishap?

• Lady Di

• The knights

• Sim

• The doctor

What does the poem suggest about circles?

• They are magical

• They are infinite

• They have a constant ratio

• They are unpredictable

What does Radius learn about the relationship between the circumference and diameter of a circle?

• The diameter is three times the circumference

• The circumference is three and one-seventh times the diameter

• The circumference is twice the diameter

• They are equal

What objects does Radius measure to confirm the magic number?

• A wheel, a pie, and an onion slice

• A wheel, a pie, and a basket

• A wheel, a pie, and a bowl

• A wheel, a pie, and a cheese

How do Radius and Lady Di prepare the correct potion?

• By guessing the dose

• By using the magic number

• By consulting the doctor

• By asking the knights

What is the significance of the celebration at the end of the story?

• The discovery of Pi

• The discovery of a new potion

• The return of the doctor

• The defeat of the dragon