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
Oksanka [162]
3 years ago
10

PLEASE HELP!! this is due soon and i rlly need help

Mathematics
2 answers:
egoroff_w [7]3 years ago
6 0

Answer:

Solution given:

r=3km

area of sector bounded by a 90° arc=90°/360°*πr²

=¼*π*3²

=<u>9/4 π or 7.068km²</u>

is a required answer

patriot [66]3 years ago
3 0

Answer:

Step-by-step explanation:

r =  3 km

Ф = 90°

Area of a sector = \frac{theta}{360}*\pi *r^{2}

                           =  \frac{90}{360}* 3.14 * 3 * 3\\\\=  \frac{3.14*3*3}{4}\\

                           = 7.065 sq.km

You might be interested in
5. A solid has a circle of radius r as its base. All sections of the solid perpendicular to the diameter along the x-axis are is
AleksandrR [38]

Answer:

 \frac{16r^3}{3}

Step-by-step explanation:

In this cross sections problem, we can integrate from -r to +r (so that the integral covers the entire base of the solid).

\int\limits^r_a {2(x^2+r^2 )} \, dx

The formatting for the integral did not let me put -r on the lower bound, so i replaced it with a, just know that a represents -r here.

Evaluating the integral gives use that it is equal to;

\frac{16r^3}{3}

Caution: this answer may not meet your needs, but this is the answer I have come up with with the given information.

If you found this answer helpful please consider leaving 5 stars, giving it a like, or if you asked this question, mark this answer as Brainliest. Thanks!

4 0
3 years ago
Round this number 43.0129 hundredths place
marishachu [46]

Answer:

43.013

Step-by-step explanation:

Theres a nine in the thousands place it has to be 5 or higher to round so its high enough.

4 0
3 years ago
In a load of laundry, 60% of the socks are white. If there are 25 socks in the load, how many are white?
Firdavs [7]
Well turn 60 into a decimal 0.60 and then multiply by 25 which is 15

remember of in math means multiply
6 0
4 years ago
Read 2 more answers
Use the numerals 1,7,7,7, and 7 to create the number 100
Aleonysh [2.5K]

Answer:

77\div.77\cdot1

Step-by-step explanation:

What we're basically looking for here are ways to get 100 using these numbers.

My immediate first thought was "can we divide the 7's by some 7's to get 100?"

I know that 7 \div .7=10, so I had the idea to make it 77 \div .77 = 100. This means that we can use the number 7 four times in the equation 77 \div .77=100.

However, we're still missing a 1 that we need to include. This is easy, we can just multiply 77 \div .77 by 1.

So in conclusion, we get 77 \div .77\cdot1

Hope this helped!

6 0
4 years ago
Read 2 more answers
Help is needed folks plz will give brainiest!
irina1246 [14]

Answer:

I belive the answer is F

Step-by-step explanation:

In question/ option F it tells us that she started with 12 bannanas before getting 4 more bunchs, the question then asks how many bannanas were in each bunch, which then added plus 12 would of gotten you 32 bannans.

6 0
3 years ago
Read 2 more answers
Other questions:
  • 30 POINTS smart people only
    12·1 answer
  • How is the product related to the first factor?
    5·1 answer
  • Can someone please help me!<br> <img src="https://tex.z-dn.net/?f=5%5E%7B-2%7D" id="TexFormula1" title="5^{-2}" alt="5^{-2}" ali
    11·1 answer
  • Pls help me with this
    14·1 answer
  • Please can any. One help me on this
    11·2 answers
  • In a box there are 3 red pens, 2 green pens, and 1 blue pen. What is the probability of picking a red pen, not replacing it, and
    7·1 answer
  • What are the solutions of x2 = 8 - 5x?
    10·1 answer
  • 33. The students of Class VIII of a school donated Rs 2401 in all, for Prime Minister's National
    9·1 answer
  • Please help with this question!! 50 POINTS
    6·2 answers
  • Work out the length of x.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!