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svet-max [94.6K]
3 years ago
9

Find the area of the semicircle.

Mathematics
1 answer:
Artemon [7]3 years ago
5 0

<u>Given</u>:

Given that the radius of the semicircle is 4 units.

We need to determine the area of the semicircle.

<u>Area of the semicircle:</u>

The area of the semicircle can be determined using the formula,

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

Substituting π = 3.14 and r = 4, we get;

A=\frac{3.14 \times (4)^2}{2}

Simplifying, we get;

A=\frac{3.14 \times 16}{2}

Multiplying, we get;

A=\frac{50.24}{2}

Dividing, we get;

A=25.12

Thus, the area of the semicircle is 25.12 square units.

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Which of the following shows the length of the third side, in inches, of the triangle below? (1 point)
GrogVix [38]

Answer:

2, sqrt of 7633

Step-by-step explanation:

for now, we'll leave the 3rd side as x

y using the Pythagorean theorem, we can conclude that (1) 48^2+x^2=73^2 or (2) 48^2+73^2=x^2.

1. If we conclude the x isn't the longest, the x would be 3025 which is the sqrt of 55, now is invalid because the 2 smallest sides can't be more than the longest side when they add up 55+48>73 so that is invalid

2. Then, it leaves us with only 1 choice left! concluding that the 3rd side is the longest. Which the answer is sqrt of 7633

6 0
3 years ago
Write 0.63 as a fraction.
Sholpan [36]
This answer is simple you just has to divide 63/100 because the zero is 2
7 0
3 years ago
Read 2 more answers
SMART STUDENT PLEASEEEE​
lawyer [7]

Answer:

Therefore,

BC=y=10.61\ units\\\\AC=x=8.6\ units

Step-by-step explanation:

Consider a Δ ABC with

m∠ B= 45°

m∠ C = 90°

AB = c = 15 cm

To Find:

BC = a = y ?

Solution:

Triangle sum property:

In a Triangle sum of the measures of all the angles of a triangle is 180°.

\angle A+\angle B+\angle C=180\\\\\angle B +35+90+=180\\\therefore m\angle A =180-125=55\°

We know in a Triangle Sine Rule Says that,

In Δ ABC,

\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}

substituting the given values we get

\frac{a}{\sin 55}= \frac{b}{\sin 35}= \frac{15}{\sin 90}

∴ \frac{y}{\sin 55}= \frac{15}{1}\\\\y=\sin 55\times 15\\\\y=10.606\\\therefore BC = y = 10.61\ units

Similarly for 'x',

\frac{x}{\sin 35}= \frac{15}{1}

\therefore x =\sin 35\times 15\\\therefore x =0.5735\times 15\\\therefore x =8.6\\

Therefore,

BC=y=10.61\ units\\\\AC=x=8.6\ units

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3 years ago
What is the equation of the line containing points (-4,3) and (7,5)
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Use the slope formula and slope-intercept form
y=mx+b
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3 years ago
Plzzzzzzz help me need to pass
Lady_Fox [76]
R is less than or equal to -8
So it's the third one
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