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anzhelika [568]
3 years ago
8

Please find the surface area of the cone (image attached) and reduce answer to nearest tenth, if necessary.

Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0

Answer:

S.A = 135.6 yd^2 (

Step-by-step explanation:

Surface area of cone is given as:

Surface Area (S.A) = πr(r + l)

Where,

r = radius = 3 yd

l = slant height = 11.4 yd

Take π as 3.14

Plug the given values into the formula to find the surface area.

S.A = 3.14*3(3 + 11.4)

S.A = 9.42(14.4)

S.A = 135.6 yd^2 (rounded to the nearest tenth)

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Use a calculator to find angle theta for which tan theta = 2. Round to the nearest hundredth.
Mashutka [201]

Answer:

in degrees: theta = 63.43°

in radians: theta = 1.11 rad

Step-by-step explanation:

To find the value of the angle theta that gives us tan(theta) = 2, we should use the inverse function of the tangent in the calculator, that is, the arc tangent function.

Then, if we use the arc tangent function (in some calculators, it may be shown as 'atan' or 'tan^-1') in the value 2, we would find:

atan(2) = 63.435°

So the angle theta that gives us tan(theta) = 2 is theta = 63.43°.

Be sure to check in the calculator if the answer is given in degrees or radians.

In radians, we would find theta = 1.1071 rad (rounded to nearest hundredth: theta = 1.11 rad)

3 0
3 years ago
Solve for T<br><br>10t = -50​
Gemiola [76]

Answer: t=-5

Step-by-step explanation:

if 10t=-50, you have to solve for the equation. to solve, you have to get the variable by itself. to get the variable by itself, you have to divide both sides by 10. 10t/10=-50/10. t=-5

7 0
3 years ago
Read 2 more answers
9) Which two ratios form a proportion? A) 5 6 and 4 5 B) 6 5 and 4 5 C) 12 15 and 5 4 D) 15 12 and 5 4
Sveta_85 [38]

Answer:

D) 15/12 and 5/4

Step-by-step explanation:

Because when you cross multiply the ratios

15*4 and 12*5

making both ratios a proportion

they both = 60

3 0
3 years ago
The sum of 5x+3 and the opposite of 12
natulia [17]

Answer:

The sum of 5x+3 is 5x+3. The opposite of 12 is -12.

4 0
3 years ago
I need help with this one
andreyandreev [35.5K]

The value of x from the given figure is 8

<h3>How to calculate the interior angle of a triangle</h3>

A triangle is a 2-dimensional shape with 3 sides an interior angle

Since the sum of the interior angles of a triangle is 180 degrees, hence;

8x - 4 + 76 + 44 = 180

8x + 116 = 180

8x = 180 - 116

8x = 64

x = 64/8

x = 8

Hence the value of x from the given figure is 8

Learn more on interior angle of a triangle here: brainly.com/question/8611232

4 0
3 years ago
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