Shapes Flashcards
1
Q
How do you find the area of a circle?
A
A=πr2
2
Q
How do you find the area of a right angled triangle?
A
A=height x base / 2
3
Q
How do you find the area of a trapezium?
A
A=a+b/2 x height
4
Q
What’s the circumference of a circle?
A
C=2πr
5
Q
How do you find the area of a sector?
A
A=πr2 x centre angle/360°
6
Q
How do you find the arc length?
A
C=2πr x centre angle/ 360°
7
Q
What’s the formula for the volume of a sphere?
A
V=4/3 xπr3
8
Q
What’s the formula for the volume of a cylinder?
A
V=πr2 x h
9
Q
What’s the volume of a prism?
A
V= area of cross section x legnth
