alleryElementary geometry formulae are described as inadequate for areas enclosed by:
ACurves
BCorners
CCircles
DColumns
Answer & Solution
Correct answer: A. Curves
1. Simple figures like rectangles and triangles have their own formulae.
2. A region with a curved edge does not.
3. Those formulae are inadequate for calculating the areas enclosed by curves.
4. That is where integral calculus is needed.
_Source: syllabus Mathematics Part II, Ch 8 'Application of Integrals'_
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