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fgiga [73]
3 years ago
11

Find the area of the circle with the given radius or diameter. Use 3.14.

Mathematics
1 answer:
elena55 [62]3 years ago
4 0

Answer:

Step-by-step explanation:

If the radius, r, is given, then the area of the circle is A = πr².

If the diameter, d, is given, then the circle area is A = π(d/2)², or A = πd² / 4.

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If a worker can do his job in 5 hours, and a student can do the same job in 8 hours, what part of the work is left to finish aft
Aleks [24]

Answer:

Part of work left to finish after two work hours is 7/20

Step-by-step explanation:

Firstly, we need to calculate their joint work rate

That will be;

1/(1/5 + 1/8) = 1/(13/40) = 40/13

This means that they will complete the task in 40/13 hours

1 whole part takes 40/13

x part will take 2 hours

x * 40/13 = 2

40x = 26

x = 26/40

So the part that will be completed in two hours is 26/40

This means that the part left to complete will be:

1 - 26/40 = 14/40 = 7/20

8 0
3 years ago
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Answer:

Johnny is wrong.

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Step-by-step explanation:

Johnny is wrong.

A better definition would be: A \cup B is the set of all elements that belong to at least one A or B.

So, the elements that belong to both A and B, like c and d in this exercise, also belong to A \cup B.

So:

A \cup B=\left\{a,b,c,d,e,f,g,h\right\}

4 0
3 years ago
Find the measure of the missing angle.
ICE Princess25 [194]

Answer:

36 degrees

Step-by-step explanation:

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36 degrees

6 0
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What is twenty percent of two hundred and ten
marishachu [46]
The correct answer is 42
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3 years ago
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The rising cost of nursing homes is forcing families to plan ahead. Nursing home costs have risen roughly 20% in 3 years, to an
elena-s [515]

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Step-by-step explanation:

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8 0
2 years ago
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