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New forum topics
- Ceva’s Theorem Is More Than a Formula for Concurrency
- The Chain Rule Explained: Don't Just Memorize, Visualize It
- The Intuition Behind Integration by Parts (Proof & Example)
- Statics
- Calculus
- Hydraulics: Rotating Vessel
- Hydraulics: Water is flowing through a pipe
- Inverse Trigo
- Problems in progression
- General Solution of $y' = x \, \ln x$
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Re: How do I work out the area?
of the shaded area sorry
Re: How do I work out the area?
If R = radius of outer circle and r = radius of inner circle, the shaded area can be fround by $A = \frac{1}{4}\pi (R^2 - r^2)$, assuming R and r are given directly or indirectly.