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
lyudmila [28]
3 years ago
14

The diameter of a circle is 18 cm what is its area in terms of pi

Mathematics
1 answer:
NikAS [45]3 years ago
3 0

Answer:

A = 81π cm²

Step-by-step explanation:

The formula for area of a circle is A = πr², where r is the radius.  The radius is half the diameter, so our radius for this problem is

18/2 = 9.    So the area is..

A = π(9²) = π(81)

  A = 81π cm²

You might be interested in
If you were present 120 days out of 124 days what percent were you present
emmainna [20.7K]

Answer:

~96.6

Step-by-step explanation:

120/124 is 30/31 or 60/62 or 96.6/99.82

5 0
3 years ago
Expand and simplify (2x+2)(2x+1)
s344n2d4d5 [400]

Answer:

4x^2+6x+2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
-2x - 6y = -24<br> X-8y = -10
Debora [2.8K]

Answer:

x = -26 and y = -2

I hope this is the answer you are looking for

Step-by-step explanation:

x-8y = -10 => add 8y to both sides

+8y = +8y

x = -10+8y

-2(-10+8y) -6y = -24 => intersect what you got into the first equation

20-16y-6y = -24 => Distribute the -2

20-22y     = -24 => subtract 20 in both sides

-20           = -20

-22y = -44 => divided by -22 in both sides

/-22 = /-22

y = -2

x-8(-2) =-10 => intersect the y into the other equation

x+16 = -10 => multiply -8*-2

 -16  = -16

x = -26 => subtract 16 in both sides.

8 0
3 years ago
Find the height of the triangle if the area is 36 m 2
n200080 [17]

Answer:

Area=1/2bh

Given area of 36m^2

1/2(x)(x-1)=36

Multiply both sides by 2 to remove deminator

(x)(x-1)=72

X^2-x=72

X^2-x-72=0 then factor

(x-9)(x+8)=0

X=9,-8 however since area must be positive, take the absolute value of 8

1/2(9m*8m)=36m^2

3 0
3 years ago
Which of the following represents a statistical question
luda_lava [24]
There are no choices to pick
7 0
3 years ago
Other questions:
  • In Mrs. Hu’s classroom, 4/5 of the students have a dog as a pet. Of the students who have a dog as a pet, 2/3 have a cat as a pe
    6·2 answers
  • I need help now pleaseeeeee Please number 3,4,5
    5·1 answer
  • 5+2(w-6) how do i rewrite as addition and solve?
    9·1 answer
  • PLEASE HELP!!!!
    13·2 answers
  • Kevin drew a diagonal inside a quadrilateral. He realizes the it always make 2 congruent isosceles triangleso. What kind of quad
    10·1 answer
  • Help 69 points
    5·1 answer
  • I need help so bad I’m on the test right now I will mark Brainliest
    10·2 answers
  • Feeling a but lazy today so i just need a lil help with this one easy problem (5)
    5·1 answer
  • Fill in each of the missing parts of the hierarchy of the quadrilaterals. Include the properties of each of the figures.
    11·1 answer
  • I don't understand this please help
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!