Area of Wafer: Pi*r^2 Explained

onqun · Mar 13, 2010

Hello guys, I have an upcoming test. When I was doing a question about finding the area of the wafer. it is circular. In the solution manual it says pi*r^2 / 4 . I do not understand where 1/4 comes from. Since it is circular , I assumed the pi*r^2 would be fine.

dlgoff · Mar 13, 2010

Usable area? I could see a little waste but not that much.

onqun · Mar 13, 2010

it just says compare the areas of wafers for the gven diameters .

onqun · Mar 13, 2010

nevermind i just found d=2r ;lol sorry

Area of Wafer: Pi*r^2 Explained

Discussion

VFD for powering a car lift

Running older induction motors on VFDs

Wireless Charging

Interpreting VIA PCB characteristics through TDR and TDT

Confinement box in the resonator ruins result

Interpreting FEXT NEXT crosstalk pattern into pcb trace geometry

Extracting fixture S-params by length difference

Understanding the fixture deembeding method being reccomended

Exciting orthogonal modes in dielectric resonator

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Area of Wafer: Pi*r^2 Explained

Discussion

Similar threads

Undergrad Series Expansion for [cos(x)-1]/x^2: Explained and Checked

High School Why is the formula for the surface area of a circle not (2*pi*r)^2?

High School Area of a Circle: Pi*R^2 - What Does it Mean?

Undergrad E=mc^2 Explained: Momentum and c

Graduate Speed of Light Dilemma: Einstein's Formula E=MC^2 Explained

High School Why is the formula for the surface area of a circle not (2pir)^2?