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
Harman [31]
3 years ago
5

I need help. So it says to find the shaded area, and I'm not really good a things like this

Mathematics
2 answers:
Tcecarenko [31]3 years ago
4 0

Step-by-step explanation:

Given,

One side of the square = 20 cm

Therefore, Area of the square = side × side

= 20 cm × 20 cm

\:  \:  \:  \:  \:  \:  \:  \:  = 400 {cm}^{2}

Also, known that

One side of the square = Diameter of the circle = 20 cm

So, radius of the circle = 20/2 cm = 10 cm

Therefore, area of the square

\:  \:  \:  \:  \: \ \:  \:  \:  \:  = \pi{r}^{2}

= 3.14 \times  {(10cm)}^{2}

= 3.14 \times 100 {cm}^{2}

= 314 {cm}^{2}

Hence, area of the shaded region is

= Area of the square. - Area of the circle

= 400 {cm}^{2}  - 314 {cm}^{2}

= 86 {cm}^{2} (ans)

krek1111 [17]3 years ago
3 0

Answer:

86 cm²

Step-by-step explanation:

<u>1) Calculate the area of the square</u>

A=lw\\A=20*20\\A=400

Therefore, the area of the square is 400 cm².

<u>2) Calculate the area of the circle</u>

A=\pi r^2\\

\pi we can substitute with 3.14. To find the radius, we divide the diameter of the circle by 2. 20 cm is the diameter of the circle, so therefore, its radius is 10 cm.

A=3.14*10^2\\A=3.14*100\\A=314

Therefore, the area of the circle is 314 cm².

<u>3) Subtract the area of the circle from the area of the square</u>

A=400-314\\A=86

Therefore, the area of the shaded region is 86 cm².

I hope this helps!

You might be interested in
Prove that the diagonals of a rhombus are perpendicular using coordinate geometry
lozanna [386]

If we draw a rhombus OABC on a coordinate grid with one vertex at the point O (0,0)

and let its height be 1 then (using the Pythagoras theorem) the coordinates of the 4 points will be as follows:-

O = (0,0) , A = (1, 1), B = (sqrt2+ 1 , 1) , C = (sqrt2, 0)

Slope of the diagonal OB = 1 / (sqrt2 + 1)

Slope of the other diagonal AC = - 1 / (sqrt2 - 1)

Product of the slopes = - 1 / ( sqrt2 + 1)(sqrt2 - 1) = -1 / 1 = -1

This proves that the diagonals are perpendicular.

5 0
3 years ago
Molli purchased 8 apples for $2.96 while looking at her reciept molli divided $2.96 by 8. Why might molli perform this calculati
Basile [38]

B

Let’s put this into a simple equation

8 apples = 2.96

We can substitute apples for x

8x=2.96

She divided by 8

X= 2.96/8

Remember x represents apples so only 1 x represents 1 apple

So that means the answer is B.

Hope that helped!

4 0
3 years ago
Read 2 more answers
3)
hram777 [196]

Answer:

D: x < 20

Step-by-step explanation:

-4x + 16 > -64

subtract 16 from both sides because you must isolate x.

-4x + 16 - 16 > -64 - 16

-4x > -80

Then divide -4 on both sides... I believe that when you divide a number by a negative number you must flip the sign...

-4x/ -4 < -80/ -4

        x < 20

(negative divided by a negative will result in a POSITIVE.)

Hope this helped... I truly apologize if this is wrong..

3 0
3 years ago
A sequence is formed by adding 1 to each square number.
MrRa [10]

Answer:

32 nd term

Step-by-step explanation:

The formula for the sequence is

n² + 1 ( that is 1 added to each square number )

Equate to 1025 and solve for n

n² + 1 = 1025 ( subtract 1 from each side )

n² = 1024 ( take the square root of both sides )

n = \sqrt{1024} = 32

6 0
3 years ago
Hi pls help me!!! thank you
elena-s [515]

Step-by-step explanation:

Circumference (C):

C = 2\pi r = 2\pi(5\:\text{ft}) = 31.4\:\text{ft}

Area (A):

A = \pi r^2 = \pi(5\:\text{ft})^2 = 78.5\:\text{ft}^2

6 0
2 years ago
Other questions:
  • The lines below are perpendicular if the slope of the green line is 2/3 what is the slope do the red line
    9·1 answer
  • A bag has 6 blue marbles and 6 green marbles. Half of the green marbles are made of plastic. A marble is selected at random from
    6·2 answers
  • A number less ten is twenty-two
    6·1 answer
  • Determine the equation for the given line in slope-intercept form. y = –x – 1 y = x + 1 y = x + 1 y = –x – 1
    15·2 answers
  • The diagram shows a sphere with center O and a radius of 6 inches that has been cut by a plane. The cross-section formed by the
    8·2 answers
  • Which letter in the word HAPPY has an order 2 rotational symmetry?<br><br> H<br> A<br> P<br> Y
    14·2 answers
  • PLEASE SHOW FULL SOLUTIONS!! Will Mark Brainliest for the best answer. The radius of a spherical balloon is 3.5 cm. What is the
    8·1 answer
  • The highest mountain in earth is 29,028 ft. The lowest under sea trench is -35,840ft. Which has the highest absolute value
    7·2 answers
  • Can anyone help? Will give Brainly + 22 pts
    9·1 answer
  • In one month Karissa earned $600 at her part-time job, and $50 was withheld for federal income tax. Suppose she earns $900 next
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!