Find the circumference of the circle.{“version”:”1.1″,”math”:”Find the circumference of the circle.”} Give the exact circumference and then the approximation.{“version”:”1.1″,”math”:”Give the exact circumference and then the approximation.”} Use π=3.14{“version”:”1.1″,”math”:”Use π=3.14″} Remember to include the unit of measurement.{“version”:”1.1″,”math”:”Remember to include the unit of measurement.”}

Convert as indicated.{“version”:”1.1″,”math”:”Convert as indicated.”} 7.2 grams = __________ kilograms{“version”:”1.1″,”math”:”7.2 grams = __________ kilograms”}

A rectangular house measures 75 feet by 60 feet.{“version”:”1.1″,”math”:”A rectangular house measures 75 feet by 60 feet.”} Find the cost of installing gutters around the house if the cost is $3.97 per foot.{“version”:”1.1″,”math”:”Find the cost of installing gutters around the house if the cost is $3.97 per foot.”}

Convert as indicated.{“version”:”1.1″,”math”:”Convert as indicated.”} 10.25 lb. = _________ oz.{“version”:”1.1″,”math”:”10.25 lb. = _________ oz.”}

Find the area of a United States flag measuring 465 feet by 215 feet.{“version”:”1.1″,”math”:”Find the area of a United States flag measuring 465 feet by 215 feet.”}

Ultrasound frequencies are below 20 kHz and can be heard by humans.  

A thermos bottle minimizes heat transfer by radiation.

The refraction of light causes mirages due to frequency. 

The speed of sound increases as temperature decreases in air.  

The Curie temperature is the temperature below which a material becomes ferromagnetic.