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Square Concatenation (Posted on 2011-09-25) Difficulty: 3 of 5
Find a base ten perfect square of 12 digits formed from the concatenation of two base ten perfect squares, one having 4 digits and the other 8 digits. None of the three perfect squares can begin with a zero.

No Solution Yet Submitted by K Sengupta    
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Solution solution Comment 2 of 2 |
322||75902 = 3200902 = 1024||57608100
392||98752 = 3901252 = 1521||97515625
492||99002 = 4901002 = 2401||98010000
572||75502 = 5700502 = 3249||57002500
622||49802 = 6200202 = 3844||24800400
632||50202 = 6300202 = 3969||25200400
792||87992 = 7900492 = 6241||77422401
932||74702 = 9300302 = 8649||55800900
992||99502 = 9900502 = 9801||99002500

  Posted by Dej Mar on 2011-09-25 18:01:48
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