What is the number by which the number 29400 must be divided or multiplied to make it a perfect square ?
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First factorise 29400 to get: 2*2*2*5*5*3*7*7.
We need one more 2 to make a second pair of 2's and one more 3 to make a pair for it (that's what we need, to find square roots). So if 29400 is multiplied by 2*3= 6 we get 176400 whose square root is 420. In the same way, if you divide it by 6 you get 4900 which is a perfect square again.
Hope that helps, if you need any more explanation I'll help.
We need one more 2 to make a second pair of 2's and one more 3 to make a pair for it (that's what we need, to find square roots). So if 29400 is multiplied by 2*3= 6 we get 176400 whose square root is 420. In the same way, if you divide it by 6 you get 4900 which is a perfect square again.
Hope that helps, if you need any more explanation I'll help.
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