Area formulas Flashcards
1
Q
Area of rectangle
A
Area = length x Width
2
Q
Area of triangle
A
area = 1/2 x base x height
3
Q
Area of trapezium
A
1/2 (a+b)/h
4
Q
Area of parallelogram
A
Base x Height
5
Q
Total surface area of a cylinder
A
2πr2 + 2πrh
6
Q
Total surface area of a cone
A
πr2+πrl
7
Q
Curved surface area of a cone
A
πrl
8
Q
Surface area of a sphere
A
4πr2
9
Q
The total surface area consists of the curved part (half of a sphere) PLUS the flat circular face – so the total surface area is
A
3πr2
