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15. Find the area of the given figure.16.5 cm4.5 cm13.5 cm#2.5 cmFig. 29.29​

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What are olfactory indicators How are the TEST of acid BASE done using them explain?An olfactory indicator is a substance whose smell varies DEPENDING on whether it is mixed with an acidic or basic SOLUTION. These type of indicators are USED in laboratories to check whether a given solution is a basic or an acidic solution by a process known as olfacto



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