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2 years ago

Two cylinders have equal diameters. are their volumes also equal? is the same true for cones and spheres?

2 answers:

8 0

<span>are their volumes also equal?
</span> Not necessarily, if they have the same height the volume of the two cylinders is the same. However, if they do not have the same height, the volume is different. The volume of a cylinder is:
V = pi * r ^ 2 * h.
the same true for cones and spheres?
For the cone, the same thing happens with the cylinder. It will depend on the height. The volume of the cone is:
V = (1/3) * pi * r ^ 2 * h.
For a sphere YES. the volumes are equal if they have the same diameter since their equation depends only on the radius. The volume of the sphere is:
V = (4/3) * pi * r ^ 3

Paraphin [41]2 years ago

5 0

<span>Although two cylinders may have equal diameters, their volumes are not necessarily equal, as the volume of a cylinder is dependent also on the cylinder's height. The same holds true for cones. Spheres, however, are, by nature, proportional. Therefore, if two spheres have the same diameter, they also have the same volumes.</span>

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sp2606 [1]

The answer would be 6.

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3 years ago

Read 2 more answers

Two solutions of salt water contain 0.1% and 0.22% salt respectively. A lab technician wants to make 1 liter of solution which c

sergey [27]

Answer:

she use 750 mL of 0.22% solution and 250 mL of 0.1%

Step-by-step explanation:

given data

salt water solution 1 = 0.1%

salt water solution 2 = 0.22%

1 liter of solution contains salt = 0.13%

solution

we will consider here quantity in liters of the 0.22% solution is = x

so that the quantity of 0.01% solution will be = 1 - x

so amount of salt in the mix will be as here

0.22 % (x) + 0.1 ( 1-x) = 0.13% (1)

solve it we get

x = 0.25

and

1-x will be = ( 1 - 0.25 ) = 0.75

so she use 750 mL of 0.22% solution and 250 mL of 0.1%

4 0

2 years ago

If y = 3 when x = 2. find x when y = 5.

ahrayia [7]

Y = 3 x = 2
if y = 1 x = ?

x = 3/2
x = 1.5
x = 5*1.5 ( y = 5 x = ?)
x = 7.5
(IF THE ANSWER IS WRONG)
may be this can be that answer

x = 2/3
x = 0.67
x = 0.67*5
x = 3.35

check the answer either first or second method is correct

8 0

3 years ago

Acellus

Oduvanchick [21]

Answer:

A = 23

b = 9.74

c =38.04

Step-by-step explanation:

from sine law .... c/C =b/B =a/A

c/125 = b/32 = 7/23

to find b..

b/32=7/23

b =9.74

to find c

c/125 = 7/23

c= 38.04

4 0

3 years ago

Which statement is true about the given expression?

Tcecarenko [31]

Answer:

option D is true

Step-by-step explanation:

Given expression is

3x^2 -11(2y+1) + 4

A) 11 is not a constant , because 11 is multiplied with 2y+1

B) 3 in the first term is not a exponent. 3 is the coefficient of x^2

C) 4 in the third term is not a factor, 4 is a constant

D) 2 in the second term is the coefficient of y. so 2 is a coefficient. That is true

7 0

3 years ago