A decimal number is multiplied by itself. If the product is 51.84, find the number.
Solution:
Given, a decimal number is multiplied by itself.
The product is 51.84.
We have to find the decimal number.
Let the decimal number be x.
According to the question,
x × x = 51.84
x² = 51.84
Square root is an inverse operation of a square.
So, x = √51.84
Long division method is an easy method to get the accurate square root of numbers.
There are 5 main operations that are used- divide, multiply, subtract, bring down and repeat.
By using long division,
So, √51.84 = 7.2
Therefore, x = 7.2
✦ Try This: A decimal number is multiplied by itself. If the product is 65.61, find the number.
☛ Also Check: NCERT Solutions for Class 8 Maths
NCERT Exemplar Class 8 Maths Chapter 3 Problem 111
A decimal number is multiplied by itself. If the product is 51.84, find the number
Summary:
A decimal number is multiplied by itself. If the product is 51.84, then the number is 7.2.
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