Finding the Square Root of a Perfect Square

Mr. Evans is hanging a square picture frame that has area of 169 cm². Find the side length of the frame.

• 12 cm

• 13 cm

• 14 cm

• 15 cm

Which of the following is a perfect square?

• 39

• 6

• 50

• 81

If I know the area of a square, how do I find the side length?

• I square the area.

• I take the square root of the area.

• I divide the area by 2.

• I divide the area by 4.

Evaluate √361

• 16

• 17

• 18

• 19

Match the following numbers to their square roots.

• 6

• 81

• 8

• 36

• 9

• 25

• 7

• 49

• 5

• 64

Mathematical Equivalence

ON

The area of a square is 36 cm². What is the length of one side?

• 3 cm

• 6 cm

• 9 cm

• 24 cm

• x = 24

• x = 121

• x = 12

• x = 144

Evaluate √289

• 14

• 15

• 16

• 17

Solve\ \sqrt{h\ }=\ 9

This means that you are finding the value for h so that when you square root it, you will get 9!

• 3

• 9

• 18

• 81