Sides of a triangle are in the ratio of 12 : 17 : 25 and its perimeter is 540 cm. Find its area.
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25 अवलोकनों का मध्यक 12 है, और दूसरे 15 अवलोकनों का मध्यक 20 है, तो सभी 40 अवलोकनों का मध्यक ज्ञात करो।
