1.

If the area under a histogram is 40cm^(2) then the area under the corresponding frequency polygon is: (a) 40cm^(2) (b) 80cm^(2) (c) 20cm^(2) (d) 30cm^(2)

Answer»

der the frequency polygon is 40 cm²step-by-step explanation:Given , area under a HISTOGRAM =  40 cm²We KNOW  that        Area under histogram   = area under frequency polygon       So             Area under frequency polygon = 40 cm²We can understand area under frequency polygon  by constructing a frequency  polygon and histogram. DRAW graph for both and after calculating the area of both graph, we will see that area under histogram is equal to area under frequency polygon. Some PART of histogram is left out after calculating the area of frequency polygon. left out part of histogram is added at  time of calculating area of histogram.



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