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Elena L [17]
3 years ago
13

Find the area of the shaded portion. Show all work for full credit.

Mathematics
2 answers:
andre [41]3 years ago
7 0
Alright, so first of all, you need to find the area of the circle that is part of the cone-shaped area so you can remove it. You need the formula:
 Area =  \pi  r^{2} ( \frac{c}{360} )where c = angle.

Now plug in the answers, and you get:
A =  \pi 6^{2} ( \frac{120}{360} ).

This would then equal to 12 \pi.


now, essentially, the shape of this ENTIRE area is of 2 right triangles. Divide 120 by 2, you get 60 degrees. You have 2 60/30/90 triangles (shown in the bottom)


Now, what you need to do is to find the area of the entire thing by using the formula to calculate the right triangle area (A = (1/2)bh). You have b, which is 6. To find the h, you use tan(60) = x/6, which gives you 6 \sqrt{3}.

The area of one right triangle of this size would be = 18 \sqrt{3}

Because 2 right triangles, multiply the area by 2 and get: 36 \sqrt{3}

Now, remember the area of that circle in that total area? subtract it from the total area (36 \sqrt{3}) by 12pi and you get 24.65.

The final answer is 24.65

alexgriva [62]3 years ago
6 0
24.65 is your answer to your question. 
I hope this helps!
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Answer:

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Paula and Kawai shared $312 in the ratio of 6:7. How much money<br> did each person get?
Maslowich

Answer:

Paula get \$144 and Kawai get \$168.

Step-by-step explanation:

Given: Paula and Kawai shared \$312 in the ratio of 6:7.

To find: How much money  did each person get?

Solution:

We have,

Paula and Kawai shared \$312 in the ratio of 6:7.

So, let Paula get \$6x and Kawai get \$7x.

As per the question,

6x+7x=312

\implies13x=312

\implies x=\frac{312}{13} =24

Therefore, Paula get 6\times 24=\$144, and Kawai get 7\times 24=\$168.

Hence, Paula get \$144 and Kawai get \$168.

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2 years ago
A father decided to give twenty five percent of his monthly income to his three children as their monthly allowance. The eldest
Helen [10]

Answer:

The youngest child will receive $2000

Step-by-step explanation:

A father decided to give 25% of his monthly income to his three children as their monthly allowance.

The eldest child got 45% of the allowance and the youngest got 20%. This means that the second child got:

100 - (45 + 20) = 100 - 65 = 35%

The second child received $3500.

Let the 25% of his monthly income be x.

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35% of x = 3500

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x = \frac{3500 * 100}{35}

x = $10000

The amount the man shared among his children is $10000.

Hence, the youngest child (20%) will receive:

20% of $10000

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The youngest child will receive $2000.

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3 years ago
Factor the expression 4x + 32. Explain each step you take in the process.
irinina [24]

Step-by-step explanation:

1. What the GCF

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4(x+8) is the solution

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11.15+11.75+10.70 I need some help with this problem
Nina [5.8K]

Answer:

33.60 is your answer

Step-by-step explanation:

Remember to add based on place value.

Note that 10.70 is the same as 10.7

11.15 + 11.75 = 22.90

22.90 + 10.7 = 33.60


<em>~Senpai</em>

3 0
3 years ago
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