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
forsale [732]
3 years ago
10

What is the area of a circle with diameter 8cm? Round your answer to the nearest tenth. use pi= 3.14

Mathematics
2 answers:
hodyreva [135]3 years ago
7 0

Answer:

50.2 square cm

Step-by-step explanation:

Diameter = 8 cm

Radius = 8/2 = 4 cm

area \: of \: circle = \pi {r}^{2}  \\  = 3.14 \times  {4}^{2}  \\  = 3.14 \times 16 \\  = 50.24 \:  {cm}^{2}  \\  = 50.2 \:  {cm}^{2}

balandron [24]3 years ago
7 0

Answer:

50.62=51

Step-by-step explanation:

A=pi*r^2

=3.14*(4^2)

=50.62=51

You might be interested in
A palm tree casts a shadow that is 28 feet long. A 6-foot sign casts a shadow 8 feet long.
s2008m [1.1K]

Answer: The height of the palm tree is 21 feet.

Step-by-step explanation:

We can use a ratio to solve this:

Actual height to shadow for both objects. The fraction equivalents must be equal.

6/8 = x/28 . Cross multiply

6(28) = 8x

168 = 8x   Divide both sides by 8  (8's "cancel" on the right)

168/8 =8x/8

21 = x . This gives us the tree's height as 21 feet.

<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

<em>6/8 = 3/4</em>

<em>Then multiply the length of the shadow by 3/4</em>

<em>3/4 × 28 = height</em>

<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

3 0
3 years ago
Terri played 70 tournament chess games during the school year and won 49 of them. What is her win-to-loss ratio?
Scilla [17]

Alright so the answer would be letter B, because

win-to-loss

49 to 21 (You can determine her losses by subtracted the number of wins from her total number of games played)

Now you must simplify your answer

7 is the greatest common factor (GCF) of both 49 and 21

Now divide both 49 and 21 by 7 to get

7 to 3

7 0
3 years ago
Help please.........................
Juli2301 [7.4K]

Answer is

8 and 2

I hope this helps

6 0
2 years ago
Question Number 22 You work for a company that manufactures large tarps used for groundcover. An order was placed for a rectangu
Colt1911 [192]

Answer: the area of the finished tarp is 131872 square inches

Step-by-step explanation:

Search strip of tarp is rectangular. The formula for determining the area of a rectangle is expressed as

Area = length × width

An order was placed for a rectangular tarp that will be made up of 8 strips of fabric. Each strip is 26 inches wide and 634 feet long. The area of each strip of tarp is

Area = 26 × 634 = 16484 square inches

Therefore, the area of the finished tarp would be

8 × 16484 = 131872 square inches

4 0
3 years ago
The triangles are similar. <br> What is the value of x?<br><br> x =
saveliy_v [14]

Answer:

x = 23

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{39}{x-10} = \frac{36}{12} = \frac{15}{5} = 3

multiply both sides by (x - 10)

3(x - 10) = 39 ( divide both sides by 3 )

x - 10 = 13 ( add 10 to both sides )

x = 23




8 0
3 years ago
Read 2 more answers
Other questions:
  • On a graph, points are grouped closely together and increase.
    9·2 answers
  • Which of the quadratics has a graph with only one x-intercept? A) y = 2x2 + 4 B) y = x2 - 8x + 16 C) y = 2x2 - 8x + 20 D) y = -2
    8·2 answers
  • Identify the slope and y-intercept for each linear function's equation.
    8·1 answer
  • Which is a counterexample for the conditional?
    15·1 answer
  • Will reward brainleist
    9·2 answers
  • Help with this question pleases
    6·2 answers
  • Simplify √5(10-4√2)<br><br> A.14<br> B.15√2<br> C.5√2-4√10<br> D.NONE OF THE ABOVE
    15·2 answers
  • There is a line whose y intercept is 3 and whose slope is 6. What is its equation in slope-imtercept form?
    6·1 answer
  • From the figure, the cylinder glass has a height of 6 inches and a radius of the mouth of the glass 1.25 inches. Find the length
    6·1 answer
  • PLS helppp I’ve been stuck on this for a while
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!