Answer:

Step-by-step explanation:
i = -1
This is a complex number
in here we take -1 = i
<u>Given</u>:
It is given that the figure of the cone.
The radius of the cone is 2.3 m.
The height of the cone is 15 m.
We need to determine the volume of the cone.
<u>Volume of the cone:</u>
The volume of the cone can be determined using the formula,

where r is the radius and h is the height of the cone.
Substituting r = 2.3 and h = 15 in the above formula, we get;




Rounding off to the nearest hundredth, we get;

Thus, the volume of the cone is 83.05 cubic meters.
Answer:
about 11 years
Step-by-step explanation:
Keywords
complementary angles, right angle
we know that
If two angles are <u>complementary angles</u>, then their sum is equal to a <u>right angle</u>
In this problem
-------> by <u>complementary angles</u>
we have

Substitute and solve for Angle TSU

therefore
the answer is the option
