Lời Giải
Lời Giải
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The area of a circle is 81𝜋 square centimeters. What is the đường kính?Lauren's age is half of Joe's age. Emma is ten years older than Joe. The sum of Lauren, Emma, and Joe's age is 54. How old is Joe?my dog is like 20 years old, how old is my dolphinThe diameter of a circle is 12 kilometers. What is the circle's chu vi?The area of a circle is 100𝜋 square meters. What is the bán kính?