Understanding the Area of a Circle

What is the main topic discussed in this video?

• The area of a rectangle

• The area of a circle

• The volume of a cylinder

• The perimeter of a square

How is area generally measured?

• In cubic units

• In linear units

• In square units

• In circular units

What is the term for the distance around a circle?

• Diameter

• Radius

• Chord

• Circumference

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

• pi times radius

• 2 times pi times radius

• pi times radius squared

• pi times diameter

If the radius of a circle is 5 cm, what is the area?

• 31.4 square cm

• 50 square cm

• 78.5 square cm

• 25 square cm

What does r squared mean in the formula for the area of a circle?

• Radius times 2

• Radius divided by 2

• Radius multiplied by itself

• Radius plus 2

What is the area of a circle with a radius of 7 cm?

• 153.86 square cm

• 49 square cm

• 100 square cm

• 200 square cm

How do you find the radius if the diameter is given?

• Add 2 to the diameter

• Subtract 2 from the diameter

• Multiply the diameter by 2

• Divide the diameter by 2

What is the area of a plate with a diameter of 26 cm?

• 600 square cm

• 530.66 square cm

• 169 square cm

• 400 square cm

What is the value of pi used in these calculations?

• 3.00

• 3.14

• 3.50

• 3.75