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
Zielflug [23.3K]
2 years ago
9

The area of a circle is 30.8m2. Find the length of the diameter rounded to 1 DP.

Mathematics
1 answer:
andre [41]2 years ago
8 0
Area of a circle = pi • r^2

We need to isolate for r.

A/pi = r^2

r = sqrt(A/pi)

r = sqrt(30.8/pi)

r = 3.1311251164

Diameter = 2r

Diameter = 6.26225023

Diameter = 6.3 m
You might be interested in
Pls help being timed and I don’t understand
shepuryov [24]

Answer:

f ( -2 ) = 30

g ( -2 ) = 3

Step-by-step explanation:

when it says f(x) and then has f(-2) - you fill in all x's in the equation with -2.. like this:

f(x) = -7(-2-2) +2                         g(x) = 2(-2)^2 -5

f(x) = -7(-4) +2                             g(x) = 2(4) -5

f(x) = 28 + 2                                g(x) = 8 - 5

f(x) = 30                                      g(x) = 3

hope this helps!!

6 0
3 years ago
Please please please help!!25points
katrin [286]

Answer:

If you could please write it down i will solve it for you.

Step-by-step explanation:

8 0
3 years ago
a student answers 90% of the questions on a math exam correctly. if he answers 27 questions correctly how many questions are on
kodGreya [7K]

Answer:

30

Step-by-step explanation:

6 0
3 years ago
-2x + 7 = x-32 i need all the steps
ycow [4]

Answer:

-2x + 7 = x-32

7+32=x+2x

39=3x

x=39/3

x=13

Step-by-step explanation:

5 0
2 years ago
I don’t really understand this
mars1129 [50]
Uhh me neither thats very complicated
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the exact amount of pie?
    6·2 answers
  • On a sunny morning, Ishaan rode his bicycle to a farm that sold baskets of apples for $ 9 . 1 2 $9.12dollar sign, 9, point, 12 e
    9·1 answer
  • What is 31/32 as a decimal?
    13·2 answers
  • What is the domain of the function shown in the mapping?
    8·1 answer
  • Help on all questions thank you :)
    15·1 answer
  • Three law firms are looking for new lawyers. There are 75 graduate students in the area. There are only 15 graduates leaving the
    11·1 answer
  • The slope of the line
    12·1 answer
  • Solve for the variable using cross products.<br> 7/6 = x/9<br> Solve for x as a decimal
    6·1 answer
  • a pole that is 3m tall casts a shadow that is 1.72m long. at the same time, a nearby building casts a show that is 50.5 m long.
    8·1 answer
  • (√49 – 4)² - 5 as numeral
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!