Mystery
A sphere has a radius of 1 meter. What is the diameter (round to the nearest hundredth)?
2 meters.
Nicolas DeFreitas decided to find the volume of a sphere with a radius of 1 inch. First he cubed 1 to get 1, then he multiplied 1 by 3.14 to get 3.14, and then multiplied it by 4 to get 12.56, which was his final answer. Where did he go wrong?
He forgot to divide by 3 after multiplying by 4.
A sphere has a radius of 5 meters. What is the volume (round to nearest hundredth)?
523.33 meters.
A sphere has a radius of 2 meters. What is the volume (round to the nearest hundredth)?
33.49 meters.
A sphere has a diameter of 7 inches. What is the volume?
179.5 inches cubed.
Demetri Frank wanted to know how much air his kickball could hold. He found out the kickball had a diameter of 12 inches, and then cubed 12 to get 1728, then multiplied it by 3.14 to get 5425.92, and finally multiplied it by 4 and divided it by 3 to get 7234.56 inches cubed. What was his mistake?
He used diameter instead of radius.
A sphere has a radius of 9 inches. What is the volume (round to the nearest hundredth)?
3052.08 inches.
A sphere has a diameter of 12 meters. What is the volume (round to the nearest hundredth)?
904.32 meters.
Free Space
Free Points
James Conrad wanted to find out the volume of an orange. First, he used 3 inches as the radius, and squared it to get 9 inches. After that, he multiplied it by 3.14 to get 28.26 and then multiplied it by 4 to get 113.04 and divided by 3 to get a total of 37.68 inches cubed. What was his mistake?
He squared 3 instead of cubing it.
A sphere has a radius of 67 inches. What is the volume (round to the nearest hundredth)?
1259194.4 inches.
A sphere has a diameter of 7 meters. What is the volume (round to the nearest hundredth)?
179.5 meters.
A sphere has a volume of 2143.57 meters cubed. What is it's radius (round to nearest whole number)?
Sean Sebastion wanted to find the volume of a bowling ball. He used the radius of 10 inches and cubed it to get 1000. Then he multiplied it by 3.14 to get 3140, and then he multiplied it by 4 to get 12560, and then divided it by 3 to get a total of 4186.67 inches squared. What was his mistake?
His final answer was squared instead of cubed.
A sphere has a radius of 29.5 miles. What is the volume (round to the nearest hundredth)?
107481.67 miles.
A sphere has a diameter of 4.8 centimeters. What is the volume (round to the nearest hundredth)?
57.88 centimeters.
Hunter Labbe decided to find the volume of a sphere with a radius of 13 inches. First, he squared 13 to get 169. Then, he multiplied it by 4 and 3.14 to get 2122.64. He finally divided it by 3 to get 707.55 inches cubed. What was his mistake?
He squared 13 instead of cubing it.
Trey Ableson wanted to know the volume of a cake pop. First, he took the radius, 11 centimeters, and cubed it to get 1331. Then he multiplied it by 4 to get 5324 and then multiplied it by 3.14 to get 16717.36. Finally, he divided it by 3 to get 5672.45 centimeters cubed.
He got 5672.45 centimeters cubed instead of 5572.45 centimeters cubed.
A sphere has a radius of 4.731 meters. What is the volume (round to the nearest hundredth)?
443.33 meters.
A sphere has a diameter of 18.53 inches. What is the volume (round to the nearest hundredth)?
3319.7 inches.