Question
The diameter of a Sphere is 4.8 cm
Use 3.14 and round to the nearest thousandth.
A 57.876 cm3
B 463.012 cm3
c 289.382 cm3
d 72.346 cm3
Use 3.14 and round to the nearest thousandth.
A 57.876 cm3
B 463.012 cm3
c 289.382 cm3
d 72.346 cm3
Answers
MathMate
radius = 4.8/2 = 2.4 cm
Volume of a sphere
= 4πr³/3
= 4π(2.4³)/3
= 57.906 cm³ using the exact value of π
There is a serious problem with error calculation and significant figures in this question. The radius is given to 2 significant figures, and π used is accurate to 3 significant figures. The answer requested is accurate to 5 significant figures, of which the last two are incorrect.
Volume of a sphere
= 4πr³/3
= 4π(2.4³)/3
= 57.906 cm³ using the exact value of π
There is a serious problem with error calculation and significant figures in this question. The radius is given to 2 significant figures, and π used is accurate to 3 significant figures. The answer requested is accurate to 5 significant figures, of which the last two are incorrect.
Felicia
I put B for this answer but I was not sure when I rounded it, this would be the closest answer.
MathMate
The <b>diameter</b> of a Sphere is 4.8 cm, which means that the <i>radius</i> is...
Felicia
Got it. Thanks MathMate..
MathMate
Great!