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
m_a_m_a [10]
3 years ago
15

Can someone please answer. There is only one question. There's a picture too. Thank you!

Mathematics
1 answer:
Akimi4 [234]3 years ago
4 0
I supposed π ≈ 3.14 and we have A = 490.87 km²:

Area(A) is:  A = π × r²  or   3.14 × r² = 490.87 →

 r² = 490.87/3.14 → r² = 156,32 → r = √156,32 → r = 12.5

But diameter (d) is:  d = 2 × r → d = 2 × 12.5 →d = 50 km


You might be interested in
10) The second angle in a triangle is 3° less than twice the first angle. The third angle measure 8° more than
andre [41]

Answer:

35, 67 and 78

Step-by-step explanation:

the angles are:

n, 2n-3 and 2n+8

there are 180 degrees in a triangle, so adding those terms together will give us 180

5n + 5 = 180

180 - 5 = 175

5n = 175

175 / 5 = 35

n = 35

now we have n we can put it in to the formula we have for the angles at the start:

n = 35

2n - 3 = 67

2n + 8 = 78

so the angles are

35, 67 and 78

8 0
2 years ago
A prefix kilo in the metric system means ___ units. A. 100 B 10 C.1,000 D.1,000,000
siniylev [52]
Kilo = 1,000
Hecto = 100
Deca = 10
Base (unit) = 1
Deci = 0.1
Centi = 0.01
Milli = 0.001
8 0
3 years ago
Read 2 more answers
8TH GRADE MATH!!!! CAN SOMEONE PLEASE HELP I'LL GIVE BRAINLIEST !!!!
Basile [38]

Answer:

where the img

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
five people, each working 8 hours a day, can assemble 400 toys in a five day work week. what is the average number of toys assem
vladimir1956 [14]

The question asks for the rate of toys per hour.

So we shall divide the total toys assembled by the total hours.

Its a five day week.

The number of hours allotted per day are 8.

So total allotted during the week are 8 × 5 = 40 hours.

Number of toys made during the week are 400.

Hence the number of toys assembled per hour per person

= number of toys / number of hours

= 400 / 40

= 10 toys per hour per person.

The average number of toys assembled per hour per person is 10.


8 0
3 years ago
Read 2 more answers
In ΔRST, the measure of ∠T=90°, the measure of ∠R=39°, and TR = 55 feet. Find the length of ST to the nearest tenth of a foot.
kolbaska11 [484]

<u>Answer:</u>

<h2>ST = 44.54 ft</h2>

<u>Explanation:</u>

given:

∠T=90° , ∠R=39° and TR = 55 ft

ST = 55×tan(39)

ST = 55×0.80..

ST = 44.54 ft

7 0
3 years ago
Other questions:
  • An account earns simple interest.<br><br> $5200 at 7.36% for 54 months
    12·1 answer
  • Pilar wanted to use estimation to solve a decimal addition problem. She correctly used estimation to rewrite the problem as 12 +
    11·2 answers
  • For a circle of radius 6 feet, find the arc length of a central angle of 12
    15·1 answer
  • The exponent in “8n5” is:
    7·1 answer
  • 1<br> Solve the following inequalities, Show your workings<br> (a)<br> 2x-3&gt; 7
    6·1 answer
  • What is the ratio of 7 boys to 8 girls playing volleyball​
    8·1 answer
  • 3
    12·1 answer
  • Using the grid below, let's plot the following points and label them with the letter.
    5·1 answer
  • What is the value of n In the equation below?
    9·2 answers
  • Which fraction has the greatest value? A number line going from negative 1 to positive 1 in increments of 1. StartFraction 5 Ove
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!