How to solve for a circle

Solving Area

100

What is the area of a circle if the circumference is 52?

What is 208.96

200

What is the area if the diameter is 26?

What is 530.66

300

What is the area if the radius is 4?

What is 50.24

400

What is the area if the circumference is 19?

What is 28.6368

Solving Circumference

100

What is the circumference if the diameter is 26?

What is 81.64

200

What is the circumference if the radius is 19?

What is 119.32

300

What is the circumference if the diameter is 30?

What is 94.2

400

What is the circumference if the radius is 26?

What is 163.28

Solving Radius

100

What is the radius if the diameter is 26?

What is 13

200

What is the radius if the diameter is 15?

What is 7.5

300

What is the radius if the circumference is 30?

What is 4.77

400

What is the radius if the circumference is 75?

What is 11.94

Solving Diameter

100

What is the diameter if the circumference is 23?

What is 7.32

200

What is the diameter if the radius is 32?

What is 64

300

What is the diameter if the circumference is 15?

What is 4.77

400

What is the diameter if the circumference is 72?

22.92

Formulas

100

What are the two formulas that help find circumference

What is 3.14(D) or (2x3.14)R

200

What is the formula to solve for radius?

What is D/2

300

What is the formula to solve area?

What is pi(r)^2 or (rXpi)r

400

What is the formula to solve for diameter?

What is C/Pi or R(2)