All categories

2 years ago

Please help on these questions

Mathematics

1 answer:

Arada [10]2 years ago

8 0

Answer:

6) 9216π

8) 24

Step-by-step explanation:

V= 2/3πr³

r = 48/2 = 24

V = 2/3π24³

V = 9216π

V = 4/3πr³

2304π = 4/3πr³

r³= (2304π)/4/3π

r³= 1728

$\sqrt[3]{r^3} =\sqrt[3]{1728}$

r = 12

D = 2r

D = 2 x 12 = 24

You might be interested in

10. For the equation 3x – 4 = 8, which

irga5000 [103]

Answer:

x = 4

Step-by-step explanation:

We can find the answer to this by solving the equation:

3x - 4 = 8

3x - 4 + 4 = 8 + 4

3x = 12

x = 4

6 0

2 years ago

Read 2 more answers

) Find the coordinates of the point A' which is the symmetric point

soldier1979 [14.2K]

Let, coordinate of point A' is (x,y).

Since, A' is the symmetric point A(3, 2) with respect to the line 2x + y - 12 = 0.

So, slope of line containing A and A' will be perpendicular to the line 2x + y - 12 = 0 and also their center lies in the line too.

Now, their center is given by :

$C( \dfrac{x+3}{2}, \dfrac{y+2}{2})$

Also, product of slope will be -1 .( Since, they are parallel )

$\dfrac{y-2}{x-3} \times -2 = -1\\\\2y - 4 = x - 3\\\\2y - x = 1$

x = 2y - 1

So, $C( \dfrac{2y -1 +3}{2}, \dfrac{y+2}{2})\\\\C( \dfrac{2y + 2}{2}, \dfrac{y+2}{2})$

Also, C satisfy given line :

$2\times ( \dfrac{2y + 2}{2}) + \dfrac{y+2}{2} = 12\\\\4y + 4 + y + 2 = 24\\\\5y = 18\\\\y = \dfrac{18}{5}$

Also,

$x = 2\times \dfrac{18}{5 } - 1\\\\x = \dfrac{31}{5}$

Therefore, the symmetric points is $A'(\dfrac{31}{5}, \dfrac{18}{5})$ .

7 0

2 years ago

Asappppp!!!!!!!!!!!!!!!!!!!!!!!!

Scrat [10]

42 because x is equal to its corresponding side

7 0

3 years ago

If Rodney traded €228.75 for $314.52, when did he make his exchange?

never [62]

The answer is C Thursday

4 0

2 years ago

Read 2 more answers

Pls hurry I’m being

kati45 [8]

D. Warm air rises and cool air sinks

7 0

2 years ago

Please help on these questions​

Please help on these questions