Formulas and Units

Which equation shows correctly the volume of the cone?

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What is the height of the cone?

• 12 in

• 6 in

• 9 in

What is this formula used to find?
V=πr²h

• The volume of a cylinder

• The volume of a cone

• The volume of a sphere

• The area of a circle

The volume of a cone is 1/3 the volume of a cylinder when the radii and heights are equal.

• True

• False

What is the perimeter of this square?

• 4 in.

• 16 in.

• 8 in.

• 20 in

What formula is this

• Area Rectangle

• Area Trapezoid

• Area Triangle

• Area Circle

A Circle has a radius of 4.  What is the circumference of the circle? (Best Choice)

• 4π or about 12.56

• 16π or about 50.24

• 2π or about 6.28

• 8π or about 25.12

A Circle has a radius of 4.  What is the area of the circle? (Best Choice) (note: units are squared)

• 4π or about 12.56

• 16π or about 50.24

• 2π or about 6.28

• 8π or about 25.12

A Circle has a diameter of 10 centimeters.  What is the circumference of the circle? (Best Choice)

• 5π or about 15.7 cm

• 10π or about 31.4 cm

• 20π or about 62.8 cm

• 100π or about 314 cm 

A Circle has a diameter of 10 centimeters.  What is the area of the circle? (Best Choice)

• 5π or about 15.7 cm²

• 10π or about 31.4 cm²

• 25π or about 78.5 cm²

• 100π or about 314 cm²