Answer:
Step-by-step explanation:
GIVEN: Suppose you want to make a cylindrical pen for your cat to play in (with open top) and you want the volume to be 
cubic feet. Suppose the material for the side costs 
per square foot, and the material for the bottom costs 
per square foot.
TO FIND: What are the dimensions of the pen that minimize the cost of building it.
SOLUTION:
Let height and radius of pen be 
Volume 
total cost of building cylindrical pen 
for minimizing cost , putting 
Hence the radius and height of cylindrical pen are 
and 
respectively.
Answer:
7
Step-by-step explanation:
Because 6+6.25=12.25 48.25-12.25=36 6x6=36 6+1=7
Answer:
As you know there are 100 centimeters in 1 meter so the asnwer is 1500
Step-by-step explanation:
1 meter = 100 centimerters
15 meter/second = 100 * 15 centimeters
so our asnwer is 1500 centimeters
Completion of question:
The Demon Drop at Cedar point in Ohio takes riders to the top of the tower and drops them 60 feet. A function that approximates this ride is h=-16^t2 + 64t + 60 where h is the height in feet and t is the time in seconds. About how many seconds does it take for riders to drop to the ground?
Answer:
4.78 s
Step-by-step explanation:
Given the equation :
h = - 16^t2 + 64t + 60
Using the quadratic formula ; where
a = - 16 ; b = 64 ; c = 60
Dropping to the ground, h = 0
16^t2 + 64t - 60 = 0
-b ± (√b²- 4ac) / 2a
-64 ± (√64²- 4(-16)(60)) / 2(-16)
-64 ± (√7936) / - 32
(-64 ± 89.08) / - 32
(-64 + 89.08) / - 32 = - 0.783 OR
(-64 - 89.08) / - 32 = 4.78
Reject the negative
t = 0.783 seconds
