6.Find the smallest whole number 2645 by which it should be divided so as to get perfect square. Also find the square root of the square number so obtained.

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How do i do this activity, is appreciated

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!