Square Roots Functions and Their Inverse

Evaluate √72. Round your answer to the nearest tenth.

• 8.48

• 8.6

• 8.4

• 8.5

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

• I square the area.

• I divide the area by 2.

• I take the square root of the area.

• I divide the area by 4.

What is the square root of 144?

• 4

• 12

• 16

• 32

What is the square root of 49?

• 6

• 7

• 8

• 9

The √20 is between which two integers?

• 2 & 3

• 3 & 4

• 4 & 5

• 5 & 6

The √40 is between which two integers?

• 7 & 8

• 6 & 7

• 5 & 6

• 4 & 5

Which of the following is a perfect square?

• 39

• 50

• 6

• 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.

• x = 24

• x = 121

• x = 12

• x = 144

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