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
Ksenya-84 [330]
2 years ago
14

What is the area of a circle with a diameter of 21 centimeters? use 3.14 for pi

Mathematics
2 answers:
Pavel [41]2 years ago
7 0

Answer:

346.185 cm²

Step-by-step explanation:

radius = diameter / 2

Area of a circle = πr²

radius = 21/2 = 10.5

Area = 3.14(10.5)²

Area = 346.185 cm²

Phantasy [73]2 years ago
4 0

Answer:

346.4 square centimeters (cm²)

You might be interested in
Ali paid $85 for an antique clock several years ago. She recently found that it had increased in value 165%. What is the present
Sophie [7]
Well you know that $85 is 100% then half of that is 50% and I guess find 15% and add all of it to get 265%
6 0
3 years ago
What is the equation, in point-slope form, of the line that has a slope of 6 and passes through the point (–1, –8)? a. y+8 = 6 (
Stolb23 [73]

Answer:

y + 8 = 6(x + 1)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

here m = 6 and (a, b) = (- 1, - 8), hence

y - (- 8) = 6(x - (- 1)), that is

y + 8 = 6(x + 1)

8 0
3 years ago
Read 2 more answers
Please someone help
FrozenT [24]
How long will she take to what ?

3 0
2 years ago
Help please!!!!! :((((((!!!!!!!
Reptile [31]
The answer i would pick is 2
5 0
3 years ago
To pass her test, Tori needs to answer at least 65% of the questions correct. If there were 60
aliina [53]
1) change 65% to a decimal = .65

2) .65 • 60 = 37.2 questions need to be right

3) since she got 42 correct, that is greater than 37.2, so she passed.

OR

1) 42/60 = 0.7

2) 0.7 to a percent = 70%

3) since she got a 70% on the test, she passed.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Joshua went to a movie that started at 1:45. The movie ended at 3:30. how long was the movie?
    5·1 answer
  • What is the area or perimeter
    11·1 answer
  • What is the area of the shaded region??
    13·2 answers
  • What are some new strategies I can use to solve equations
    14·1 answer
  • The sum of two numbers is 17 and their difference is 29 what are the two numbers
    10·1 answer
  • 1/6 of the garden is used for growing petunias. 3/4 of the Pentunias are pink what fraction of a garden pentunias what fraction
    14·1 answer
  • Help for a brainly crown
    10·1 answer
  • Please help me please help please help!!!!!!!!!!!
    8·2 answers
  • Length of wall is 13.5m calculate the area in cm2 ​
    9·2 answers
  • Determine the given rotation <br><br> please help me :( no one hasn’t helped me
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!