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Percentage Change and Reverse Percentage

Percentage Change and Reverse Percentage

TGM Original Questions
  1. The length of a rectangle is increased by \(30\%\) and the breadth of the rectangle is increased by \(40\%\). Find the percentage change in its area.
  2. The radius of a circle is increased by \(20\%\). Find the percentage change in its perimeter and area, respectively.
  3. The base of a triangle is increased by \(10\%\) and the perpendicular height from the base is decreased by \(10\%\). Find the percentage change in its area.

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Answer:(i) \(82\%\) increase (ii) Perimeter: \(20\%\) increase, area: \(44\%\) increase (iii) \(1\%\) decrease

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