Determine the density of the rock using correct significant digits. The mass of the rock is 25.69 g.
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Answer:
Step-by-step explanation:
The equation for the area of a circle is A=.
A=area
r=radius
We were given the diameter of the circle not the radius, so we need to solve for the radius.
Radius=(1/2)Diameter So,
(1/2)6=3mm
Now we can solve for the area.
3^2(3.1415926)=28.2743mm
Now round to two decimal places.
28.27mm