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USPshnik [31]
3 years ago
11

Find the surface area and use 3.14 for pie

Mathematics
1 answer:
IgorLugansk [536]3 years ago
6 0

Answer:

640.56ft^2

Step-by-step explanation:

V=2πrh+2πr^2

V=2×3.14×6ft×11ft+2×3.14×6^2

V=6.28×66ft^2+6.28×36ft^2

V=414.48ft^2+226.08ft^2

V=640.56ft^2

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An angle measures 72° less than the measure of its complementary angle. What is the measure of each angle?
Ronch [10]

Answer:

81 and 9

Step-by-step explanation:

Okay, so if 2 angles are complementary, it means that when they are added together, they equal 90 degrees. So using this, we can make an equation. Let's call one angle x and the other that is 72 less than angle x can be described as x - 72. Now let's make that into an equation.

90 = x + x -72

So in order to solve this, we need to get x by itself. So we need to add 72 on both sides, and the equation should now look like this:

162 = x + x

Now we have to add the x's together.

162 = 2x

Now in order to isolate x, you divide by 2 on both sides.

X = 81

So we now know the larger angle is 81, and the smaller angle which is 72 less, would be 9.

3 0
3 years ago
If BC= 6.5, CD= 7.8, and AD=12.2, find AB to the nearest tenth
Mazyrski [523]
Assuming that each of these letters are splitting this half and half (based off of the information given here) then AB would be 9.4
8 0
4 years ago
Foston is directly between liberty and west Quall and is 4 inches from liberty on the map .how far is foston from west quall
Fed [463]
IF Foston is directly between this means Foston is y the middle, so there is the same distance from Foston to Liberty and from Foston to West Quall = 4 inches
6 0
3 years ago
Read 2 more answers
The base of a right circular cone has a radius of 4 inches and a slant height of 9 inches. If the radius and the slant height ar
ioda

Answer:

Correct option: B -> 36

Step-by-step explanation:

The surface area of a circular cone is given by the formula:

Surface area = pi * radius * (radius + slant height)

If the inicial radius is 4 in and the slant height is 9 in, we have:

Surface area = pi * 4 * (4 + 9) = 52pi in2

The radius and the slant height are multiplied by 6, so we have:

radius = 6 * 4 = 24 in

slant height = 6 * 9 = 54 in

So the new surface area is:

New surface area = pi * 24 * (24 + 54) = 1872pi in2

The factor of the surface areas is:

New surface area / Surface area = 1872pi / 52pi = 36

Correct option: B

3 0
4 years ago
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katovenus [111]

1st is

2nd is

3rd is not

4th is

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3 years ago
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