Circles

Question 1

What is the formula for circumference of a circle

Answer 1

C= 3.14 * Diameter

Question 2

What is the formula to calculate the Area of a circle

Answer 2

A= 3.14 * Radius squared

Question 3

Calculate the Length of the arc

Answer 3

Length of the Arc

Angle
——— 3.14 * Diameter
360

Question 4

Calculate the Sector Area

Answer 4

Sector area =

Angle
——— * 3.14 *Radius squared
360

Question 5

Calculate the length of the arc when the angle is NOT given

Answer 5

Angle = Length of the arc
———————— *360
3.14 * Diameter

Question 6

Calculate the sector area when the angle is NOT given

Answer 6

Angle = Sector area
—————- * 360
3.14 * Radius Squared