Circumference, Volume and Area

Find the circumference of a circle with a diameter of 12 mm .

• 37.68 mm
• 18.84 mm
• 75.36 mm
• none of the above

What is the area of a circle with a radius of 21 cm?

• 1384.74 cm²
• 2142.12 cm²
• 4348.08 cm²
• 1289.12 cm²

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

Which expression could be used to find the approximate circumference of the quilt piece?

• 2(pi)16
• 2(pi)8
• 2(8)
• 2(4)

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

• πr²
• 2πr
• √π

What is the area of a circle with a radius of 3?

• 9π
• 5π
• 91π
• 34π

Find the Surface Area

• 556 cm²
• 278 cm²
• 680 cm²
• 340 cm²

Find the volume of the figure.

• 150 in³
• 100 in³
• 300 in³
• 180 in³

Find the volume of the figure?

• 4003 cm³
• 336 cm³
• 36 cm³
• 412 cm³

Find the Volume of the given figure.

• 30 ft³
• 36 ft³
• 96 ft³
• 11 ft³