Maths - equations

What is the formulae for speed?

speed= distance/time

What is the formulae for density?

density=mass/volume

What is the formulae for pressure?

pressure=force/area

What is the formulae for volume of a cylinder

h x pi x radius\*2

What is the formulae for area of a cylinder?

2 x pi x radius\*2 + 2 x pi x radius x height

How do you work out the area of a sector?

area of sector/360 x pi x radius\*2

How do you work out the length of an arc?

angle of arc/ 360 x pi x diameter

How do you work out the perimeter of a sector?

length of arc + 2 x radius

What is the equation for a line graph?

Y=mx + c

what does the mx equal?

The gradient rise/run

what does the c equal?

the y intercept