Surface Area to Volume

Cell size and shape

• shapes
• 1 um³ of water = 1 pg
• calculating volume and surface area

  sphere	V=4/3pi*r3	SA=4 pi*r2
  cylinder	V= h*pi*r2	SA=2*pi*r2 + 2pi*r*h
  ellipsoid	V=4/3pia2b	SA= 4pi*a*b

• Surface Area to Volume ratio