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kozerog [31]
3 years ago
10

Maths question, will mark Brainliest! Find the area of a circle with a radius of 4.

Mathematics
2 answers:
notka56 [123]3 years ago
8 0

Answer:

8\pi

Step-by-step explanation:

area=\pir^{2}

\pi4^{2}

16\pi

since it is a semicircle, cut that number in half.

Mazyrski [523]3 years ago
6 0

Answer:

25.12units squared

Step-by-step explanation:

A = \frac{\pi r^2}{2} or \frac{3.14r^2}{2}

r = 4

3.14 x 4^2 = 50.24

50.24/2 = 25.12

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Answer:

To use proportions to solve ratio word problems, we need to follow these steps:

Identify the known ratio and the unknown ratio.

Set up the proportion.

Cross-multiply and solve.

Check the answer by plugging the result into the unknown ratio.

Step-by-step explanation:

comment and let me know how it helps

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4 years ago
What Number does the name LESLIE equal (in Numbers pls)
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537543 is the number representation of LESLIE on my telephone. c: Good luck!~
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A Scientist had a bottle that contains 56.6 mL of solution.She used 3.2 mL of the solution for an experiment.She poured half of
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56.6 - 3.2 = 53.4
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3 years ago
When two lines intersect to form a 90 degree angle, these lines are called ________ lines?
zalisa [80]
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5 0
4 years ago
Read 2 more answers
What is the value of y?
NNADVOKAT [17]

Answer:

y = 40

Step-by-step explanation:

Lets make an equation to represent the sum of the angles:

We know that the sum of angles of triangles equals 180 degrees. So based on this knowledge, the equation is :

2y + y + 10 + 50 = 180


Now we simplify:

2y + y = 3y


10 + 50 = 60


So our new equation is 3y + 60 = 180

Now all we have to do is simplify:

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y = 40


So the answer is 40 hope this helped


7 0
3 years ago
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