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RD Chapter 21 Areas of Bounded Regions Ex 21.1 Solutions

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Thus, Required area = square units

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Question - 10 : -

Sketch the region {(x,y):9x2 + 4y2 = 36} and find the area enclosedby it, using integration.

Answer - 10 : -

9x2 +4y2 = 36

Area of Sector OABCO =

Area of the wholefigure = 4 × Ar. D OABCO

= 6p sq. units

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