# Circles

### Area of circles

Find the area of circles.

### Circumference of circles

Find the circumference of circles.

### Area and Circumference of circles

Find the area and circumference of circles.

### Area of circles in terms of pi

Find the area of circles, answer to be given in terms of pi.

### Circumference of circles in terms of pi

Find the circumference of circles, answer to be given in terms of pi.

### Area and Circumference of circles in terms of pi

Find the area and circumference of circles, answer to be given in terms of pi.

### Find the radius/diameter of a circle from the area

Find the radius/diameter of a circle given the area.

### Find the radius/diameter of a circle from the circumference

Find the radius/diameter of a circle given the circumference.

### Find the radius/diameter of a circle from the area or circumference.

Find the radius/diameter of a circle given the area or circumference.

### Area of sectors

Find the area of sectors

### Arc-length of sectors

Find the lengths of a series of arcs.

### Perimeter of sectors

Find the perimeter of sectors.

### Area and arc-length/perimeter of sectors

Find the area and arc-length/perimeter of sectors