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| Question | Answer |
| area of a circle | |
| circumference of a circle | pi d |
| area of a sector | angle (circle with line) ------------------------- 360 |
| arc length | angle (circle with line) ---------------------------------------- x pi d 360 |
| surface area of a cone | pi r l l= sloping edge |
| surface area of a sphere | 4 pi r squared |
| surface area of a cylinder | 2 pi r squared + 2 pi r h h= height |
| interior angle + exterior angle = ? | interior + exterior = 180 degrees |
| all exterior angles of polygon = | add up to 360 degrees |
| how do you work out the sum of the interior angles? | (n-2) x 180 n= number of sides |
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