Flashcards in Mathematics Deck (13)

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1

## Area of a triangle

### (base x height) / 2

2

## Area of a rectangle/square

### Base x height

3

## Area of irregular figures

### Divide the figure into rough smaller shapes e.g. squares and triangles.

4

## Area of circles

### Pie R Squared (R is the radius=half the diameter)

5

## Volume Definition

### Amount of space taken up by an object or container m^3

6

## Capacity Definition

### Amount a container can hold e.g. a liquid or a gas.

7

## Volume of rectangular tanks

### Width x Length x Height

8

## Volume of rectangular tank with sloping base e.g. swimming pool

### Add together values for deep and shallow ends and divide by 2 then multiply this value by the length and the width.

9

## Volume of Circular Tanks

###
Surface area is calculated as normal and then multiplied by the height of the tank.

or

0.8xd^2xh (Multiply answer by 1000 to get capacity in litres or 800 x d^2 x h

10

## Volume of Cones and Pyramids

### (area of base x height) / 3.

11

## Volume of a Sphere

### (Pi x diameter^3) / 6.

12

## Volume of irregular shaped tanks e.g. ponds

### 2/3 (surface area x average depth)

13