Mental Math - Perfect Square and Square Root

Calculate the number whose square root is 5

• 25

• 100

• 50

Which of the following is a perfect square?

• 2

• 16

• 39

• 113

Which of the following is a perfect square?

Which of the following is a perfect square?

• 8.1

• 0.81

• 0.081

• 2.8

• 5.2

• 13.5

Which of the following has a square root between 3 and 4?

• 10

• 24

• 67

What is the formula for the overlap area here?

Find the surface area.

• 16

• 20

• 22