Diagram of a Circle

**Problem : **
What is the diameter of a circle with radius 7?

**Problem : **
What is the circumference of a circle with radius 7?

**Problem : **
What is the area of a circle with radius 7?

Diagram of a Circle

**Problem : **
What is the radius of a circle with diameter 8?

**Problem : **
What is the circumference of a circle with diameter 8?

**Problem : **
What is the area of a circle with diameter 8?

**Problem : **
What is the radius of a circle with area 23?

**Problem : **
What is the diameter of a circle with area 23?

**Problem : **
What is the circumference of a circle with area 23?