10 x 20 = 200
30 + 20 = 50
200/50 = 4
answer
the quotient is 4
Answer: The height is roughly 20 mm
------------------------------------
Explanation:
Let's find the area of the circular base
This circle has a radius of 12, so r = 12
Plug this into the area of a circle formula to get...
A = pi*r^2
A = pi*12^2
A = pi*144
A = 144*pi
A = 144*3.14 <<-- replace pi with 3.14
A = 452.16
The area of the circle is roughly 452.16 square mm
There are two of these faces, so 2*A = 2*452.16 = 904.32 represents the total base area
The lateral surface area is unknown. Let's call it L for now. If we add the total base area (904.32) to the lateral surface area (L), we would get the complete surface area which is given to be 2411.52
So,
904.32+L = 2411.52
904.32+L-904.32 = 2411.52-904.32
L = 1507.2
The lateral surface area is roughly 1507.2 square mm
The formula for the lateral surface area of a cylinder is
L = 2*pi*r*h
We found L = 1507.2 and we know that r = 12, so let's use this to find h
L = 2*pi*r*h
1507.2 = 2*3.14*12*h
1507.2 = 75.36*h
1507.2/75.36 = 75.36*h/75.36
20 = h
h = 20
The height is roughly 20 mm
The rate of change is 5 cards / hour
Multiply 5 and 6
She makes 30 cards in 6 hours
Hope this helps!
Answer:
Hailey won by holding her breath for 102 seconds
Step-by-step explanation:
Britney held her breath for 44 seconds
Carla held her breath for 88 seconds
Hailey held her breath for 102 seconds
Y - 12 < -32 is the answer
