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
lukranit [14]
3 years ago
7

Can you help me work this out please?

Mathematics
2 answers:
Readme [11.4K]3 years ago
5 0

Step-by-step explanation:

Always start by writing what you know

Area of a circle

A= 3.142 x r^2

r = 21cm

Nina [5.8K]3 years ago
5 0
Area of a triangle is a=3.14(r)^2
21 is the radius so plug that in for r and solve
hope this helps!!
You might be interested in
Need Answer Fast Please to solve the Linear Expression: 5(5n+2)+(3-2n)
tatyana61 [14]

Answer:

23n +13

Step-by-step explanation:

5(5n+2)+(3-2n)

Distribute

25n + 10 +3 -2n

Combine like terms

25n -2n  + 10+3

23n +13

3 0
3 years ago
Read 2 more answers
Build a fence around his rectangular garden. The length is 30 feet. The width is 6 yards. How many feet of fencing is needed
nadya68 [22]
The field that is being fenced in has two 30 foot sides and 2 18 foot sides. The reason they are 18 is because there are 3 feet in a yard. You would then add all 4 sides together, equaling your perimeter.

The final answer is 96 sq feet.
4 0
3 years ago
If the ratio of dogs to cats at an animal shelter is 2:5, then the number of cats is _____ times the number of dogs.
klio [65]
The answer is 2.5. Just make 5 and 2 0.4 as a ratio
8 0
3 years ago
Read 2 more answers
INSERT TWO RATIONAL NUMBERS BETWEEN 2 AND 3. How to find them?
Kay [80]
There are an infinite number of them.
Here are a few:

2.1
2.2
2.3
2.3000000001
2.30000000000000006
2.5
2.00009
.
.
etc.

How to find them:

You probably never heard this before, but I'll bet
you'll remember it from now on:

<em>ANY number that you can write down on paper completely, </em><em>using digits
and a decimal point if you need it but no symbols, is a rational number.</em>

If you can write it down completely without any 'comments', then it's rational.
3 0
3 years ago
Find the area of a square whose side is 9.4cm .
BigorU [14]

Area = {(9.4)}^{2}

= 88.36 \:  {cm}^{2}

Therefore, area of square is 88.36 cm².

7 0
3 years ago
Other questions:
  • Of the 50 U.S. states, 4 have names that start with the letter W.
    12·2 answers
  • What function type can have vertical asymptotes?
    9·1 answer
  • S = \sqrt{\frac{1}{N-1} \sum_{i=1}^N (x_i - \overline{x})^2}. Solve.
    9·1 answer
  • What is the value of 2×3 to the third power +1÷7+5×8
    15·2 answers
  • 3 . 072 &gt; 3 . 2 Choose...
    12·2 answers
  • In the year 2006, a person bought a new car for $18000. For each consecutive year after that, the value of the car depreciated b
    5·1 answer
  • Calculate
    14·1 answer
  • What integer makes this equation true? -2 + X = 10
    14·2 answers
  • Solve the following triangle angles
    6·1 answer
  • Sam Snail is at the bottom of a pipe 30 feet deep. He can crawl three feet up each day, but each night he slides back two feet.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!