Volume/SA Pre Assessment

What is/are the formula(s) to find the area of a circle?

• πr²
• 2πr
• √π

What does area mean?

• the distance around a shape
• half the distance around a shape
• the amount of space outside a shape
• the amount of space inside a shape

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

What is the area of this circle?

• 82.13 m²
• 78.50 m²
• 314.16 m²
• 170.12 m²

What is the diameter?

• 5 in
• 10 in
• 3.14 in
• 15.84 in

What is the diameter of circle with a radius of 6?

• 12

• 36

• 2 times 3

• 42

What does C represent in the formula:

C = π·d

• Pi

• Circumference

• Diameter

• Area

What does d represent in the formula:

C = π·d

• diameter

• radius

• pi

• 3.14

What is the diameter of a circle?

• the distance around a circle

• the area of a circle

• halfway through a circle

• a line through the center of a circle