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40 votes
40 votes
The area of a square postcard is 25 square inches. How long is each side postcard?​

User Joshua McKinnon
by
3.0k points

2 Answers

23 votes
23 votes

Answer:

The side is 5 square inches.

Explanation:

Area of square formula:

A = s x s or
s^2

To figure out the sides, we use this formula:

A = 25 ÷ s = s

But to figure out s = side, think of factors of 25 like this:

25: 1,5,25

Now let's plug in the factors of 25 to figure out the missing side length.

A = 25 ÷ 1 = 25

This is not true.

A = 25 ÷ 5 = 5

This is true.

A = 25 ÷ 25 = 1

This is not true.

So our answer is 5 square inches on each side.

User Adam Stevenson
by
2.7k points
19 votes
19 votes

Answer:

5 inches

Explanation:

To find the area of a square the formula is A = bh which with a square is essentially one side squared. We know this because every side of a square is the same. We also know that 5 squared is 25 meaning the answer is 5 inches(You could also use the formula A = bh : A = 5 x 5 : A = 25).

User Mirla
by
3.1k points