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3 years ago

Calculate the area of the given circle.

Mathematics

1 answer:

kirill [66]3 years ago

8 0

Answer:

63.59 (c)

Step-by-step explanation:

Formula: π $r^{2}$

Plug in data:

9cm is diameter and a radius is half a diameter so the radius is 4.5cm.

π x 4.5^2 = 63.59cm^2

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The length of ZX is 2 units. What is the perimeter of triangle XYZ?

dezoksy [38]

Keywords

triangle,perimeter,distance, length, side, points

we know that

The perimeter of a triangle is the sum of the three length side

To find the length side calculate the distance between two points

The formula to calculate the distance between to points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Step 1

Find the distance ZY

$Z(1,0)\\Y(3,1)$

substitute the values

$d=\sqrt{(1-0)^{2}+(3-1)^{2}}$

$dZY=\sqrt{5}\ units$

Step 2

Find the distance XY

$X(-1,4)\\Y(3,1)$

substitute the values

$d=\sqrt{(1-4)^{2}+(3+1)^{2}}$

$dXY=\sqrt{25}=5\ units$

Step 3

Find the perimeter of the triangle

$P=ZX+ZY+XY$

we have

$dZX=2\sqrt{5}\ units$

$dZY=\sqrt{5}\ units$

$dXY=5\ units$

Substitute

$P=(2\sqrt{5}+\sqrt{5}+5)\ units$

therefore

the answer is

$P=(3\sqrt{5}+5)\ units$

4 0

3 years ago

Read 2 more answers

One more i need help with plz answer I need it done by today

polet [3.4K]

Answer:187.5 inches.

Step-by-step explanation:

25 / 2 = x / 15

25 = 2x / 15

15(25) = 2x

375 = 2x

187.5 = x

The actual car is 187.5 inches.

5 0

3 years ago

Read 2 more answers

What is the smallest positive integer that Anastasia could have thought of?

Dima020 [189]

Answer:

Step-by-step explanation:

an integer is a natural counting number, such as 1...2...3...4... and so on....

zero is not considered an integer because it is a neutral number.

therefore, the smallest possible positive integer would have to be 1!

i hope this helped you!

stay safe!

3 0

3 years ago

Solve for me please this is trigonometry

Vladimir79 [104]

Answer:

$x= 23.4$

Step-by-step explanation:

In a right triangle the tangent of an angle is the ratio of the opposite length over the adjacent*. In formulas, $tan 54° = x/17$ Solving for x, using a calculator for the tangent, $x= 23.4$

*I promise I didn't just spellcheck that.

3 0

2 years ago

Find d using a trigonometric ratio

babunello [35]

Answer: 38 is your answer hope this helped

plz make brainly

Step-by-step explanation:

6 0

3 years ago