Carlos wants to find out the area of his front yard, so he covers it with equal smaller squares as seen below. The sides of each small square are one foot long. Which of these tells the area of one of the smaller squares?

21

Step-by-step explanation:

you can count all the little squares or multiply 7 times 3 witch gives you 21

hope this helps :)

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.