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In-s [12.5K]
3 years ago
14

Find the surface area

Mathematics
1 answer:
Digiron [165]3 years ago
6 0
Use a calculator online
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What is the volume of the composite figure? Use 3.14 for π and round the answer to the nearest tenth of a cubic unit.
Bumek [7]
To find volume of a cylinder, you must find the area of the base and multiply it by the height of the object.

V=Bh where B=area of the base. Since the base is a circle, we must find area of the circle. A=pi(r^2)
A=3.14(6^2) Since it gave us the diameter, we take half for radius. Solve A=3.14(36)
A= 113.04 square cm

Now to find volume.
V=113.04•11
V=1243.44 cubic cm

Now find volume of the cone on top.

V=1/3Bh again with B= area of the base (pi)(r^2)
Since the two objects share a base, we can use the area of the cylinder as above.
V=1/3(113.04)9
We have to do a little simple math to determine the height of just the cone. Total height is 20-11 height of the cylinder. The difference is 9.
V=1/3(113.04)9 multiply
V=339.12 cubic cm

Now add the two volumes together to find total volume.
Total V=1243.44+339.12
V=1582.56 cubic cm
3 0
3 years ago
Read 2 more answers
Which is the decimal form of<br> 7/11 rounded to the nearest tenth?
elixir [45]

Answer:

.6

Step-by-step explanation:

7/11 would be around .63, rounded to the nearest tenth is .6,

7 0
3 years ago
Read 2 more answers
Help please I would appreciate it !
MAXImum [283]

Answer/Step-by-step explanation:

Given:

Line equation => 2.1x + 9.9y - 9.2 = 0

Required:

x-intercept and y-intercept of the line.

SOLUTION:

The x-intercept is the point where the line intercepts the x-axis. To find the x-intercept of the line for which the equation is given above, set y = 0 and solve for x.

2.1x + 9.9(0) - 9.2 = 0

2.1x + 0 - 9.2 = 0

2.1x - 9.2 = 0

2.1x - 9.2 + 9.2 = 0 + 9.2

2.1x = 9.2

\frac{2.1x}{2.1} = \frac{9.2}{2.1}

x = 4.4 (approximated)

The y-intercept is the point where the line intercepts the y-axis. At this point, x = 0. Set x = 0 and solve for y to find the y intercept.

2.1(0) + 9.9y - 9.2 = 0

9.9y - 9.2 = 0

9.9y - 9.2 + 9.2 = 0 + 9.2

9.9y = 9.2

y = \frac{9.2}{9.9}

y = 0.9 (approximated)

4 0
4 years ago
Enter an equation to describe the linear relationship.
marusya05 [52]
Well if it h then take the y key and mil in storage for you to do :)
7 0
3 years ago
Find the indicated angle or side. Give an exact answer.<br> Find the measure of angle A in degrees.
Anna35 [415]

Step-by-step explanation:

law of cosine :

c² = a² + b² - 2ab×cos(C)

with c being the side opposite of C.

so, in our case

3² = 3² + 3²×3 - 2×3×3×sqrt(3)×cos(A)

0 = 3²×3 - 18×sqrt(3)×cos(A)

27 = 18×sqrt(3)×cos(A)

cos(A) = 27/(18×sqrt(3)) = 3/(2×sqrt(3)) =

= 0.866025404...

A = 30°

FYI : since it is an isoceles triangle, C = A = 30°.

and therefore B = 180 - 30 - 30 = 120°.

as the sum of all angles in a triangle is always 180°.

8 0
2 years ago
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