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A decimal number is multiplied by itself. If the product is 51.84, find the number.

Answer:

Let us assume decimal number be ‘a’.

We know that a × a = a^2

So,

a × a = 51.84

a^2 = 51.84

a = √51.84

The required number is found out by using long division method.

Then,

a = √51.84

a = 7.2

**∴ 7.2 is the decimal number is multiplied by itself and its product is 51.84.**

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