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Vaselesa [24]
3 years ago
5

Find the surface area of the hemisphere 6cm

Mathematics
1 answer:
lina2011 [118]3 years ago
7 0

Answer:

452.4 cm^2

Step-by-step explanation:

a = 4\pi {r}^{2} \\ a = 4 \pi \times (6)^{2}   \\ a = 452.4 \: cm^{2}

I hope that is useful for you :)

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On a flight from New York to London, an airplane travels at a constant speed. An equation relating the distance traveled in mile
lions [1.4K]

Complete question :

On a flight New York to London an airplane travels at a constant speed. An equation relating the distance traveled in miles d to the number of hours flying t is t= 1/500d. How long will it take the airplane to travel 800 miles?

Answer:

1.6 hours

Step-by-step explanation:

Given the function :

Time t taken for flying distance d is given by:

t = 1/500 * d

Tine taken to fly 800 miles;

d = 800 miles

t = 1/500 * (800)

t = 800 / 500

t = 1.6

Hence, time t = 1.6 hours

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3 years ago
What is the measure of angle R?<br> A. 30°<br> B. 50°<br> C. 100°<br> D. 180°
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Answer:

100

Step-by-step explanation:

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2 years ago
I am authoring you to offer free insurance for a year the regular price is 6.99 this will save the customer almost_ a year
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6.99*12 = $83.88 savings an year
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3 years ago
A) 30 : 1, 2, 3, ___,10,15,30 20:1,2,4,- 20 Common Factors:​
Archy [21]

Answer:

a)30-1,2,3,5,6,10,15,30

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3 years ago
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Determine two angles between 0° and 360° that have a cosine of negative root3/2 without using a calculator
Naily [24]

Answer:

150° and 210°

Step-by-step explanation:

1) to drow a circle with radius=1 in the system of coordinates like in the attached picture;

2) to mark point (-√3/2)≈-0.866 on X-axis (in the picture it is the point M);

3) to graph line AB through point M, the line AB || Y-axis and the points A and B are on the circle with radius=1;

4) to measure the angles ∠ROA and ∠ROB (the points are marked with red colour);

5) finally, m(∠ROA)=150°; m(∠ROB)=210°.

5 0
2 years ago
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