Why is 49 a perfect square

A: Yes, the number 49 is a perfect square. Why is 49 a perfect square? A perfect square is a number that can be expressed as the product of two equal integers. Try these steps first: A number that is a perfect square never ends in 2, 3, 7 or 8.

If your number ends in any of those numbers, you can stop here because your number is not a perfect square. Obtain the digital root of the number. The digital root essentially is the sum of all of the digits. If you're lost, don't worry, we'll go over each step in more detail below. All possible numbers that are a perfect square have a digital root of 1, 4, 7, 9.

Let's try it Step 1: What is the last number of 49? Step 2: We now need to obtain the digital root of the number. Number 47 48 50 51 Perfect Square? Is 49 a composite number? Is 49 an even number? Is 49 an odd number? Is 49 a perfect square? Is 49 a palindrome? Is 49 a Fibonacci number? How is the number 49 written in scientific notation? Pre-Algebra Square Roots. Explanations 4 Alex Federspiel. Video What Is a Perfect Square? This video by Brian McLogan covers the definition and calculation of perfect squares.

Summary: Let's start by looking at a square. Now, what if we take the area of this square? Remember: The area of a square is its length times its width. Related Lessons. View All Related Lessons.

Eunji Kwon. A perfect square is any number that can be expressed as the product of two equal integers. Image by Caroline Kulczycky. Example 1 Is 81 a perfect square? Show Solution Check. Greg Voth. Let's take a set of coins. Now, let's say you want to arrange them into squares. Asked 4 years, 5 months ago. Active 4 years, 5 months ago. Viewed times. Mathxx Mathxx 6, 3 3 gold badges 32 32 silver badges 80 80 bronze badges.

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