Question

the diameter of a sphere is 2.14 cm .calculate the volume of the sphere to the correct number of significant figures​

Answer 1

3.142×(2.14)2/4 then multiple with height

Answer 2

$\sf{Diameter\:(d)=2.14\:cm}$

$\sf{Volume\:of\:sphere=\dfrac{4}{3}\pi\dfrac{(d)³}{8}}$

$\sf{Volume\:of\:sphere=5.1314\:cm³}$

$\sf{∵\:The\:number\:of\:significant\:in\:the\:diameter=3}$

$\sf{∴\:The\:answer\:must\:have\:three\:signifcant\:figures}$

$\sf{Thus,\:the\:volume\:of\:the\:sphere\:is\:5.13\:cm³.}$