All categories

3 years ago

HELP ASAP 20 POINTS BRAINLIEST

Mathematics

1 answer:

Setler [38]3 years ago

3 0

Answer:

56.55 $cm^{3}$

Step-by-step explanation:

r = 6/2 = 3

Area of a cylinder:

π $r^{2}$ x length

$3^{2}$ π x 6 = 54π

Area of sphere:

$\frac{4}{3}$ x π x $r^{3}$

$\frac{4}{3}$ x π x $3^{3}$ = 36π

54π - 36π = 18π = 56.55

You might be interested in

If i'm getting 20% commission from a monthly sale of $800000 what is my 30% in month of sale be?

Oksana_A [137]

Answer:

Your commission check for the 20% would be $160,000 and your 30% would be $240,000.

Step-by-step explanation:

To find each of these, multiply the total number of sales by the percentage of the commission.

$800,00*20% = $160,000

$800,000*30% = $240,000

6 0

2 years ago

Evaluate the line integral for x^2yds where c is the top hal fo the circle x62 _y^2 = 9

natulia [17]

Parameterize $C$ by

$\mathbf r(t)=\langle x(t),y(t)\rangle=\langle3\cos t,3\sin t\rangle$

where $0\le t\le\pi$ . Then the line integral is

$\displaystyle\int_Cx^2y\,\mathrm dS=\int_{t=0}^{t=\pi}x(t)^2y(t)\left\|\frac{\mathrm d\mathbf r(t)}{\mathrm dt}\right\|\,\mathrm dt$
$=\displaystyle\int_{t=0}^{t=\pi}(3\cos t)^2(3\sin t)\sqrt{(-3\sin t)^2+(3\cos t)^2}\,\mathrm dt$
$=\displaystyle3^4\int_{t=0}^{t=\pi}\cos^2t\sin t\,\mathrm dt$

Take $u=\cos t$ , then

$=\displaystyle-3^4\int_{u=1}^{u=-1}u^2\,\mathrm du$
$=\displaystyle3^4\int_{u=-1}^{u=1}u^2\,\mathrm du$
$=\displaystyle2\times3^4\int_{u=0}^{u=1}u^2\,\mathrm du$
$=54$

6 0

3 years ago

A projector enlarges an image in the ratio 20:1. What will be the size of an enlargement of a picture that is 8cm by 6cm?

nydimaria [60]

Answer:

160 cm × 120 cm

Step-by-step explanation:

this means 1 cm turns into 20 cm.

so, 8 cm × 6 cm becomes

8×20 = 160 cm × 6×20 = 120 cm

3 0

1 year ago

3x+4y=10 solve for y

Sever21 [200]

Answer:

y=5/2 - 3x/4

Step-by-step explanation:

7 0

3 years ago

10 divided by 4 2/3 <br> uh pls help

jok3333 [9.3K]

Answer:

2.14 or 214/100

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers