Answer:
The ratio of the surface areas and volume is 8((5y+5x) /25xy)
Step-by-step explanation:
This problem bothers on the mensuration of solid shapes.
Let us assume that the radius =x
Radius r=5x/4
And the height =y
Height h= 5y/4
We know that the total surface area of a cylinder is
A total = 2πrh+2πr²
We can factor out 2πr
A total = 2πr(h+r)
The volume of a cylinder is given as
v= πr²h
The surface area and volume ratios
Can be expressed as
2πr(h+r)/πr²h= 2(h+r)/rh
= (2h+2r)/rh= 2h/rh + 2r/rh
= 2/r + 2/h
= 2(1/r + 1/h)
Substituting our value of x and y
For radius and height we have
= 2(1/5x/4 + 1/5y/4)
=2(4/5x + 4/5y)
=2*4(1/5x + 1/5y)
= 8 (5y+5x/25xy)
Answer:
$5.07
Step-by-step explanation:
1. Find the total cost of apples first
1.99 * 3 = $5.97
2. Price of the bread
.89 * 2 = 1.78
3. Price of the box of cereal
3.99
4. Gallon of milk
3.19
5. Add all together
And you come up with 14.93 dollars
6. Subtract by 20
20 - 14.93 = 5.07
2k+3k+2-2=13-2-3k+3k
5k=11
5k/5=11/5
K=11/5
a^2 = c^2 - b^2 = 64 - 4 =60
So a = the square root of 60.
