Answer:

Step-by-step explanation:
Density is defined as mass of an object divided by its volume.
#We calculate the volume of the cylinder:

Given the mass= 15.3kg and volume as above, we calculate density as:

Hence, the solid's density is 
Answer:
23,039
Step-by-step explanation:
13,000×1.045¹³ ≅ 23,039
(1, 3 )
to determine if the given points are a solution to the equation
They must lie on the given line to be a solution
the only one that is on the line is (1, 3 ) and is therefore the only solution
Given:
Total forest area = 43,000
Old growth trees forest = 0.2%
To find:
The area of the old growth trees.
Solution:
We have,
Total forest area = 43,000
Old growth trees forest = 0.2%
Area of the old growth trees = 0.2% of 43,000
= 
= 
Therefore, the area of the old growth trees is 86 acres.