किसी आयताकार हॉल के फर्श का परिमाप 250 मीटर है यदि ₹10 प्रति मीटर स्क्वेयर की दर से चारों दीवारों पर पेंट कराने की लागत ₹15000 है तो इस हॉल की ऊंचाई ज्ञात करें
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