Pi Day

A circle has a radius of 23 cm. Which of the following is the best estimate for the circumference of the circle?

• 71.76 cm

• 143.52 cm

• 144. 44 cm

• 72.22 cm

Tags

CCSS.7.G.B.4

A pothole has a radius of 9 cm. Which of the following best represents the distance around the pothole?

• 14.13 cm

• 28.26 cm

• 42.39 cm

• 56.52 cm

Tags

CCSS.7.G.B.4

Which of the following values is closest to the diameter of a circle with an area of 314 square centimetres?

• 20 cm

• 10 cm

• 100 cm

• 31.4 cm

Tags

CCSS.7.G.B.4

The radius of a circle is 6 cm. What is the area?

• 18.84 cm²

• 37.68 cm²

• 87.98 cm²

• 113.04 cm²

Tags

CCSS.7.G.B.4

Find the surface area of a sphere with the radius of 1.5 cm.  

 $Surface\ area\ of\ sphere\ =\ 4\pi r^2$ 

•  $28.26\ cm^2$  

•  $7.065\ cm^2$  

•  $18.84\ cm^2$  

•  $14.13\ cm^2$  

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

A cylindrical oatmeal canister has a diameter of 4 cm and a height of 10 cm. The manufacturing company wants to package the oatmeal in square containers to cut back on wasted storage space. If the new carton has a square base of 4 cm sides, what is the minimum height it must have to the nearest quarter centimetre, to hold the same volume of oatmeal? Use 3.14 for the value of Π.

 $Volume\ of\ cylinder\ =\ \pi r^2h$  

•  $7\ \frac{3}{4}\ cm$  

•  $8\ cm$  

•  $8\ \frac{1}{4}\ cm$  

•  $8\ \frac{1}{2}\ cm$  

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

A satellite in a circular orbit rotates around the Earth every 120 minutes. If the Earth's radius is 4000 miles at sea level, and the satellite's orbit is 400 miles above sea level, approximately what distance does the satellite travel in 40 minutes?

• 1400 miles

• 9210 miles

• 4400 miles

• 4120 miles

• 8000 miles

Tags

CCSS.HSG.C.B.5