1650 cm²= rs
1650 cm²=22/7 x r x 25
r = 1650 cm²:(22 x 25) x 7
1650 cm² : 550 x 7
3 x 7 = 21 cm
r(r+s)
22/7 x 21(21+25)
66(46)
3046 cm²
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1650 cm²= rs
1650 cm²=22/7 x r x 25
r = 1650 cm²:(22 x 25) x 7
1650 cm² : 550 x 7
3 x 7 = 21 cm
r(r+s)
22/7 x 21(21+25)
66(46)
3046 cm²