Answer:
Step-by-step explanation:
Given that,
The height of a cylinder, h = 8 inches
The diameter of the cylinder, d = 14 inches
Radius, r = 7 inches
We need to find the volume of the cylinder. The formula for the volume of a cylinder is given by :
So, the volume of the cylinder is equal to 
.
2.49 divied by 48 1/8
make 2.49 into an mixed number first
2 49/100.
make 2 49/100 into an improper fraction
Mutiply the whole number with the denominator
2*100= 200
Add 200 with the numerator. 200+49= 249
2 49/100= 249/100
48 1/8-make it into a improper fraction
48 1/8=385/8
249/100* 8/385
Answer: 0.05
As we knw that the dr/dt = 2
And The area of the circular slick is given by formul
A = (pi)r^2.
Now lets take derivative:
<span>dA/dt=2πrdr/dt
As we knw that radius is 25
so</span><span>dA/dt=2π(25)(2)=100π
which is equal to
=314.16 per minute this is how area is increasing
now for part b
</span><span> t = 4, the radius will have increased to 8 m.
now we will put the values in formula dr/dt
</span>so it will be.dA/dt=2π(8)(2)
=32π
=100.53 is the answer
hope it helps
