Flashcards in Maths equations Deck (13)

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1

## Arc length?

### radius x θ

2

## Circumference of a circle?

### 2 x pie x radius

3

## Area of a circle?

### pie x radius^2

4

## Curved surface area of cylinder?

### 2 x pie x radius x height

5

## Surface area of a sphere?

### 4 x pie x radius^2

6

## Area of a trapezium?

### 0.5 x (a + b) x height

7

## Volume of a cylinder?

### pie x radius^2 x height

8

## Volume of a sphere?

### 4/3 x pie x radius^3

9

## Pythagoras theorem?

### a^2 = b^2 + c^2

10

## Cosine rule?

### a^2 = b^2 + c^2 - 2bc cosA

11

## Sine rule?

### a/sinA = b/sinB = c/sinC

12

## Rule for log(AB)?

### log(AB) = log(A) + log(B)

13