Circumference and Area of Circle 22/7 for Pi

The perimeter of a circle is also known as the ______of the circle

• area

• arc

• circumference

Ratio of circumference to diameter is a constant and it is denoted as ____.

Can you say that the circumference of a circle is always more than three times its diameter?

• Yes

• No

• 5 cm

• 10 cm

• 2.5 cm

• 7.5 cm

Which of the following below would you have to use Pi for?

• the area and circumference of a circle

• the area of a rectangle

• the height of a square

• the length from one edge of a triangle to another

Pi is approximately equal to?

• Threeve (a combination of 3 and five)

• 19.6

• 7.2

• 3.14

If the area of a circle is 78.5 square cm, what is the radius of the circle?

• 5 cm

• 10 cm

• 7.5 cm

• 2.5 cm

• 43.96

• 153.86

• 87.82

• 307.72

A circular pool has a diameter of 16 meters. What is the area of the pool?

• 201.06 square meters

• 100.53 square meters

• 402.12 square meters

• 50.27 square meters