Q: What number between 100 and 10000 that is both triangular and square?

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10,000 square centimetres in a square metre. 100cm x 100cm = 10000 square cms.

The nearest number whose square ≤ 10000 is 100. Then the greatest odd number less that 100 is 99 so there are 50 odd numbers in the range 1- 99 inclusive whose squares are less than 10000.

The smallest 5 digit number is 10000 = 1002 The largest 5 digit number is 99999 and 3162 < 99999 < 3172 So, take any number between 100 and 316 (both inclusive) and square it to get a 5-digit perfect square.

10000 is the square of 100 so you're looking for the square of 99 which is 9801.

10000

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10,000 = the square of 100100,000,000 = the square of 10,000

The square numbers integers between 576 and 10000 (and their square roots, in the left column) are: 245762562526676277292878429841309003196132102433108934115635122536129637136938144439152140160041168142176443184944193645202546211647220948230449240150250051260152270453280954291655302556313657324958336459348160360061372162384463396964409665422566435667448968462469476170490071504172518473532974547675562576577677592978608479624180640081656182672483688984705685722586739687756988774489792190810091828192846493864994883695902596921697940998960499980110010000

Yes. Of 10000.

10000 = 1002.

10,000 square centimetres in a square metre. 100cm x 100cm = 10000 square cms.

The nearest number whose square ≤ 10000 is 100. Then the greatest odd number less that 100 is 99 so there are 50 odd numbers in the range 1- 99 inclusive whose squares are less than 10000.

The smallest 5 digit number is 10000 = 1002 The largest 5 digit number is 99999 and 3162 < 99999 < 3172 So, take any number between 100 and 316 (both inclusive) and square it to get a 5-digit perfect square.

10000 is the square of 100 so you're looking for the square of 99 which is 9801.

There is an infinity of numbers between 8500 and 10000. For example 8605+sqrt(2).

10000

Divide it by a centimetre and multiply it by the number 10000.

9250