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Area of a circle = π r²

r = (1/2) d = (1/2) * 140 = 70

area         = π * (70)²

                = 4900 π cm²

Student should read the passage once over to try and place it within the context of the novel. Highlight key terms in the question, e.g. a question asking how Steinbeck presents the relationship between G...

Imagine a water ballon which is slowly filling up with water. The ballon is fine and intact when there's not much water in it but what happens when we fill it so much that it can no long hold all the wate...

Normally we think of CO2 as a gas because it is (at least when its in the atmosphere it is). However, it is a very different story inside of cells. CO2 is produced as a result of respiration inside mitoch...

We first need to find dy/dx and we use the fact that dy/dx = dy/dt * dt/dx. So we have dy/dt = -6sin(3t) and dx/dt = 12cos(3t). Substituing these in we have dy/dx = -6*sin(3t)1/(12cos(3t...