Question:
A reservoir in the shape of a right circular cylinder has a height of 84ft. If it to contain 79,200 L of water, find its radius.
Answer:

Step-by-step explanation:
Given
---- V
--- h
Required
Determine the radius

Convert volume to 


The volume (V) of a cylinder is:

Substitute values for volume and height

Divide both sides by 84

Take
as 3.14

Divide both sides by 3.14


Take the square root of both sides


<em>Hence, the radius is 3.26 ft</em>
90° clockwise rotation about the point 0,0
Answer:
8. a2=b2+c2 i think
9.A4 measures 210 × 297 millimeters or 8.27 × 11.69 inches I THINK
10. im not sure
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
Evaluate Blue when z = 9
To do this, we simply substitute 9 for z in 

Convert indices to fraction


<em>Hence, the blue section has an area of </em>
<em></em>
Answer:
I think the 3rd option but im not sure