Round to the nearest tenth

3053.6

Step-by-step explanation:

So, to find the answer to this, we must look at the formula for the volume of a circle:

V=4/3pi*r^3

There is only one value to plug in here, and thats the radius.

The radius is 9.

So lets plug that in:

V=4/3*pi*9^3

Now lets solve.

First, lets cube our 9:

9x9x9

=

81x9

=

729

So now its:

V=4/3*pi*729

Now lets multiply 729 by 4, then divide it by 3 to figure out 4/3*729:

4*729

=

2916

2916/3

=

972

Now we have V=972*pi

There are two options for this.

We can leave it as V=972

However, this may not be allowed for some problems.

So lets multiply 972 by pi:

972*pi

=

3053.62

Now lets round this to the tenths:

3053.6

So this is our answer

Hope this helps!

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510