1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fed [463]
3 years ago
12

How is the area of a semicircle found?

Mathematics
1 answer:
fenix001 [56]3 years ago
5 0

Answer:

(A) Take half the area of the whole circle.

Step-by-step explanation:

A semi-circle is half of a circle, thus the area of circle is given by:'

Area of circle={\pi}r^2, where r is the radius of the circle.

Since, A semi-circle is half of a circle, therefore area of the semi circle is also half of the circle, therefore

Area of semi circle=\frac{{\pi}r^{2}}{2}

Thus, the area of the semi circle can be found by taking half the area of the whole circle.

You might be interested in
Please help me solve -6 = 14 - z/3
dybincka [34]
Solve. -6 = 14 - z/3Subtract 14 from both sides

-20 = -z/3

Multiply -3 by both sides to get rid of the negative and 3 with the z.

z= 60
6 0
3 years ago
Read 2 more answers
A pyramid has a square base with sides 100 feet long. The original height was 75 feet.
viva [34]

Step-by-step explanation:

<u>Step 1:  Find the volume of the original pyramid</u>

<u />V = a^2*\frac{h}{3}

V=(100)^2*\frac{75}{3}

V=10000*25

V=250000

<u>Step 2:  Find the volume of the cut off</u>

<u />V=(20)^2*\frac{15}{3}

V = 400*5

V=2000

<u>Step 3:  Find the percent that still remains</u>

<u />250000-2000

248000

248000 / 250000

0.992*100

99.2

Answer:  99.2%

8 0
3 years ago
Read 2 more answers
Lucie has $3.28 in pennies, nickels, dimes and quarters. She has twice as many dimes as nickels and five fewer quarters than dim
Alex_Xolod [135]

Answer:

a dollar 95 my man I did this

7 0
2 years ago
Which point is part of the solution of the inequality y&lt;=|x+4|-3
Whitepunk [10]
<h2>Hello!</h2>

The answer is: The point (0,0) is part of the solution.

<h2>Why?</h2>

To find which point is part of the solution of the inequality, we need to evaluate each of the given points. If the inequality is satisfied, then the point is part of the solution, otherwise, if the inequality is not satisfied, the point is not part of the solution.

We are given the inequality:

y\leq |x+4|-3

So, evaluating we have:

- First point (-2,1)

y\leq |x+4|-3\\\\1\leq |-2+4|-3\\\\1\leq |2|-3\\\\1\leq 2-3\\\\1\leq -1

Now, since 1 is not less or equal to -1, the point (-2,1) is not part of the solution.

- Second point (1,3)

y\leq |x+4|-3\\\\3\leq |1+4|-3\\\\3\leq |5|-3\\\\3\leq 5-3\\\\3\leq 2

Now, since 3 is not less or equal to 2, the point (1,3) is not part of the solution.

- Third point (-4,2)

y\leq |x+4|-3\\\\2\leq |-4+4|-3\\\\2\leq |0|-3\\\\2\leq 0-3\\\\2\leq -3

Now, since 2 is not less or equal to -3, the point (-4,2) is not part of the solution.

- Fourth point (0,0)

y\leq |x+4|-3\\\\0\leq |0+4|-3\\\\0\leq |4|-3\\\\0\leq 4-3\\\\0\leq 1

Now, since 0 is less than 1, the point (0,0) is part of the solution.

Hence, we have that the point (0,0) is part of the solution.

Have a nice day!

3 0
3 years ago
Can someone please help me solve this logarithm equation
solmaris [256]

Answer:

x=\frac{33}{7}

Step-by-step explanation:

Orginal equation:

log_2(x+1)-log_2(x-4)=3

So lets do this step by step.

First, lets add log_2(x-4) to both sides of the equation!

This gives us:

log_2(x+1)=3+log_2(x-4)

Then, when we put this into exponential form, we get:
2^{3+log_2\left(x-4\right)}=\left(x+1\right)

This then equals:

8(x-4) = x-1

This can be simplfied into:

8x-32 = x+1

Then we can add 32 to both sides, and subtract x from both sides to get the variable and number each on their owns ide:

7x=33

Finally, we can divide 33 by 7 to get:
x=\frac{33}{7}

Hope this helps! :3

4 0
2 years ago
Other questions:
  • Cathy is paid at a rate of $7 20 per hour for a basic hour-week of 70 hours. She is paid time-and-a-half for over-time during th
    9·2 answers
  • Given: m<br> KL<br> =25°, m<br> MJ<br> =85°<br> Find: m∠MEJ
    6·2 answers
  • Thank you guys for helping me I know I'm being annoying
    9·1 answer
  • There are 8 squares. If 25 percent of the squares are red and the rest of them are blue, how many squares are red?
    14·2 answers
  • Can someone help solve for X
    9·2 answers
  • A six sided die is rolled and the spinner on the right is spun.What is the probabiliy of rolling a 6 and spining a vowel
    15·1 answer
  • Marie has a recipe that calla for 2 1/4 cups of flour for 3 dozen cookies. How much would show needs to make 60 cookies
    10·2 answers
  • If you can’t see the answer choices , they are <br> A. 9<br> B. 8 <br> C. 10 <br> D. 12
    6·1 answer
  • Which of the following equations could be the result of using the comparison method to solve the system shown?
    15·2 answers
  • Find the volume of the sphere.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!