Pi Flashcards
0
Q
How do you work out the area of a circle if the radius is 5cm?
A
(Pi) 3.142 x 52
= 78.552
1
Q
What is pi?
A
3.412
2
Q
How do you work out the area of half a circle if the diameter is 10cm?
A
3.142 x 5 (because it’s half a circle so it’s half the diameter)2
= 78.55 / 2
= 39.275cm2
