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
stepladder [879]
3 years ago
10

If the area of a circle is 121 pi square units, what is its diameter

Mathematics
2 answers:
postnew [5]3 years ago
8 0

Answer:22

Step-by-step explanation:

diameter=d

Area=121π

area of circle=π x (d/2)^2

121π=π x d^2/4

121π=πd^2/4

Cross multiplying we get

121π x4=πd^2

484π=πd^2

Divide both sides by π

484π/π=πd^2/π

d^2=484

Taking the square roots of both sides we get

d=√(484)

d=22 diameter=22

zzz [600]3 years ago
5 0
Ffhhbbvgghjjiufdeeedfhjytreetuhh
You might be interested in
A car was sold 24 standard washed in a day , which was 25% of their total sales for that day . What was the total amount of wash
-Dominant- [34]

Answer:

96

Step-by-step explanation:

GIVEN: A car was sold 24 standard washed in a day , which was 25\% of their total sales for that day.

TO FIND: Total amount of washes that the car wash sold that day.

SOLUTION:

Let the total sales of car washes sold for that day =x

total number of standard car washes sold s=24

As, total standard car washes sold are 25\% of total sales in a day

s=\frac{25}{100}x

putting value in equation

24=\frac{25}{100}x

x=\frac{24}{25}\times100

x=96

Hence the total  number of car washes sold that day are 96

4 0
3 years ago
Rewrite the following equation in log form: 2^2 = 4
Finger [1]

We have to write

2^2 =4

In log form

To convert exponential equation to log equation, we have to use the following ruleIf \ a^b = c, \ then \ b=log_{a} c

So we will get

If \ 2^2 =4, \ then \ 2 = log_{2} 4

or

log_{2}4=2

And that's the required log form .

5 0
3 years ago
Read 2 more answers
Percy paid $24.10 for a basketball. The price of the basketball was $22.99. What was the sales tax rate?
Bess [88]
The correct answer that I think it is B
4 0
3 years ago
Which answers are equal to the expression below? Check all that apply PLEASE WILL GIVE BRAINLIEST
kramer

Answer:

B., D., E.

Step-by-step explanation:

\sqrt{9} \cdot \sqrt{100} =

= \sqrt{9 \cdot 100}      This is choice B.

= \sqrt{900}          This is choice E.

= 30              This is choice D.

5 0
3 years ago
There is a 10% off sale on laptop computers. If someone saves $90 on a laptop, what was its original cost?
Angelina_Jolie [31]

Answer:

I think 100$

Step-by-step explanation:

I can't be to sure

4 0
2 years ago
Read 2 more answers
Other questions:
  • Harry asked a sample of 4 people how many siblings they had. Here are their responses:
    12·1 answer
  • PLEASE HELP I'LL GIVE BRAINLIEST
    14·1 answer
  • Please help me! This is for my math homework and if i get it wrong I will have to start over
    13·1 answer
  • 5(x + 3) + 9 = 3 (x - 2) + 6<br><br> Please Show Work.
    14·2 answers
  • In ΔPQR, p = 220 inches, q = 890 inches and ∠R=121°. Find the length of r, to the nearest inch.
    14·1 answer
  • 5/6 +3/7 give answer as a mixed number
    15·2 answers
  • How can you rewrite the number 1 as 10 to a power?
    12·1 answer
  • An oil tanker is leaking at a constant rate per minute. After 11 minutes, 931 gallons of oil remain in the tanker. After 18 minu
    13·1 answer
  • Is probability and statistics part of algebra?<br><br> Thank you and have a good day! :D
    13·1 answer
  • Please help meeeee:(((((((
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!