Exploring the Area of Circles

This video tutorial covers the concept of calculating the area of circles. It begins with an introduction to the formula for the area of a circle, pi r squared, and explains the importance of understanding the radius and diameter. The tutorial includes practical examples, such as planning a pizza party, to illustrate the real-life application of these concepts. It also provides step-by-step calculations for various circle-related problems, including using different values for pi. The video concludes with instructions for an assignment on Google Classroom.

What does '8 to the second power' signify?

• 8 multiplied by 8

• 8 plus 8

• 8 multiplied by 2

• 8 divided by 2

What is essential to know when planning a pizza party?

• The weight of the pizza

• The temperature of the pizza

• The diameter or radius of the pizza

• The color of the pizza

Which formula is used to calculate the area of a circle?

• r * r

• pi * r * r

• pi * d

• 2 * pi * r

If the diameter of a circle is 18 feet, what is the radius?

• 36 feet

• 9 feet

• 18 feet

• 4.5 feet

How do you calculate the area of a circle with a radius of 14 inches using 22/7 for pi?

• 22/7 * 196

• 22/7 * 14

• 22/7 * 14 * 14

• 3.14 * 14 * 14

What is the area of a 14 inch diameter pizza using 22/7 for pi?

• 154 square inches

• 231 square inches

• 77 square inches

• 308 square inches

How do you find the area of half a circle with a radius of 12 cm?

• 3.14 * 12 * 12 / 2

• 6.28 * 12 * 12

• 3.14 * 6 * 6

• 3.14 * 12 * 6

What is the area of a quarter-circle with a radius of 5 cm?

• 78.4 square centimeters

• 9.8 square centimeters

• 39.2 square centimeters

• 19.6 square centimeters

How would you calculate the area of a circle with a diameter of 16 feet?

• 2 * pi * 8

• pi * 8 * 8

• pi * 16 * 16

• pi * 4 * 4

What is the correct way to find the area of a circle?

• Multiply pi by the diameter squared

• Multiply pi by the radius squared

• Multiply pi by the diameter

• Multiply pi by twice the radius