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What will be the value of BC if the area of two similar triangles ∆ABC and ∆PQR is 64cm2 and 81cm2 respectively and the length of QR is 15cm.

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What will be the value of BC if the area of two similar triangles ∆ABC and ∆PQR is 64cm<sup>2</sup> and 81cm<sup>2</sup> respectively and the length of QR is 15cm.






 
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