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
just olya [345]
3 years ago
14

The top of a manhole cover is shaped like a circle. The area of the manhole cover is 380 square inches. What is the circumferenc

e of the manhole cover, to the nearest inch? 
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
6 0

need to find the radius first

 area = pi*r^2

380 = PI *r^2

380/PI = r^2

r^2 = 121

r = sqrt(121) = 11 inches

 radius is 11 inches


 now calculate circumference:

 c = 2*PI*r

 C = 2 * 3.14 * 11

circumference = 69.08 = 69 inches

You might be interested in
How many times can 6 go into 906
Igoryamba
6 goes in to 906 151 times
5 0
3 years ago
Read 2 more answers
It takes Sofia c minutes to cycle from the library to the mall.It takes 1/8 of the time cycling to travel the same distance walk
Mamont248 [21]
Answer:
Equation: w = (1/8) c
c at w = 44 minutes is 352 minutes

Explanation:
We are given that:
1- Time taken to cycle from library to mall is c minutes
2- Time taken to walk from library to mall is w minutes
3- Time taken to walk = 1/8 time taken to cylcle
Therefore:
w = (1/8) c
Now, we want to find c if w = 44 minutes
All we do is substitute with the w in the equation and get c as follows:
w = (1/8) c
44 = (1/8) c
c = 44*8 = 352 minutes

Hope this helps :)
6 0
3 years ago
the sides of a triangle are in the ratio 2:3:4. if the measure of the shortest side of the triangle is 12 centimeters what is th
REY [17]
Hello,
We see that there is the ratio
2:3:4, which let us to conclude the ratio between the shortest and longest side is 2:4 or 1:2, so the longest side is two times bigger than the smallest.
To find the longest side:
12×2=24 cm. As a result, the length of the longest side is 24 cm. Hope it help!
3 0
3 years ago
John had a rock that weighed 128 kg. The scale he used to weigh the rock has a percent error of 2%. Which could be measured weig
Genrish500 [490]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
Howard’s uncle gave him $885 for his tenth birthday. The money was invested in a savings account with interest compounded at 12%
Stella [2.4K]
Principal Amount = P = $885
Amount Accumulated = A = $3500
Interest rate = r = 12% = 0.12
Compounding period in a year = n = 2
Time in years = t = ?

The formula for compounding is:

A=P(1+ \frac{r}{n})^{t*n}

Using the values, we get:

3500=885(1+ \frac{0.12}{2})^{2*t} \\  \\ 
 \frac{3500}{885} =(1.06)^{2t} \\  \\ 
log(\frac{3500}{885})=log((1.06)^{2t}) \\  \\ 
log(\frac{3500}{885})=2tlog(1.06) \\  \\ 
t= \frac{log(\frac{3500}{885})}{2log(1.06)}  \\  \\  \\ 
t=11.80

This means, it will take him 11.8 or approximately 12 years 
6 0
3 years ago
Other questions:
  • The total of 36 78 198 475 and 620
    9·2 answers
  • Can someone please help me with this please?<br> ANSWER ASAP!!!!!!!!!
    13·1 answer
  • Helppp what’s the answer
    14·1 answer
  • Please help DO NOT IGNORE DO NOT IGNORE
    13·1 answer
  • Can anyone Help please.
    8·1 answer
  • F(x)=x^2-2.g(x)=4x-2
    6·1 answer
  • Solve. <br> 1/2x + 3 &lt; 4x - 7<br><br> A) x &gt; 8/7<br> B) x &lt; -8/7<br> C) x &gt; 20/7
    12·1 answer
  • Solve 3(6b-1)-7(2b+3)=0​
    12·2 answers
  • The surface area of the world is about 7/10 water. If a very small, non-dangerous meteoroid lands on the earth, what is the prob
    10·2 answers
  • What is the equation for line D?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!