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
Bogdan [553]
3 years ago
9

A circle has a circumfrence of 14mm. Find its area. Give an exact answer

Mathematics
2 answers:
lys-0071 [83]3 years ago
5 0

Answer:

Inner circumference = 14*pi mm

Step-by-step explanation:

natta225 [31]3 years ago
5 0

Answer:

15.597 mm^2

Step-by-step explanation:

The formula for circumference of a circle 2πr, in which r is the circle's radius.

The formula for area of a circle πr^{2}. This means that we can find the radius from the circle's circumference and use it to find the area.

First we have to equal 14 to 2πr because both are representations of circumference and we need to find r.

14 = 2πr

Solve:

14/2 = 2πr/2

7 = πr

7/π = πr/π

2.23 = r

Plug 2.23 into the formula for area as r and solve:

π(2.23)^2

π4.96

15.597

You might be interested in
What is the percentage difference between 50 and 45
Vinil7 [7]
45 is 90 percent of 50. / / / 50 is (111 and 1/9) percent of 45.
6 0
3 years ago
The sum of an even number and odd number is always even
Ipatiy [6.2K]
Yes your correct but thats not a question
7 0
3 years ago
Read 2 more answers
Which power does this expression simplify to?<br> [(7)(7)<br> 1<br> - -<br> ооо<br> 74<br> O
Paha777 [63]

Step-by-step explanation:

Answer is in attached image...

hope it helps

6 0
3 years ago
For each expression, combine like terms and write an equivalent expression with fewer terms. 4x+3x
hoa [83]

9514 1404 393

Answer:

  7x

Step-by-step explanation:

We can factor out x and simplify.

  4x +3x = x(4 +3) = 7x

6 0
2 years ago
1. Calculate the area of the circle having the following radius (r) or diameter (d) (π= 3.14) (a) Radius (r) = 3 cm (b) Diameter
Marat540 [252]

The area of circle having radius 3cm is 28.27 cm², diameter 5cm is 19.63 cm², radius 8 ft is 201.06 ft², diameter is 113.1 cm², diameter 20 km is 314.16 km², diameter 15 mm is 176.71 mm² and radius 16 yd is 804.25 yd².

Given the radius and diamtere are (a) Radius (r) = 3 cm (b) Diameter (d) = 5 cm (c) Radius (r) = 8 ft. (d) Diameter (d) = 12 cm (f) Diameter (d) = 20 km (g) Diameter (d) = 15 mm (i) Radius (r) = 16 yd​.

We will calculate the area of circle by using the formula A=πr² or π(d/2)².

(a) Radius (r)=3cm

The area of circle is

Area=π(3)²

Area =9π

Here, π=3.14, we get

Area =9×3.14

Area=28.27cm²

(b) Diameter (d)=5cm

The area of circle is

Area=π(5/2)²

Area =π(2.5)²

Area=6.25π

Here, π=3.14, we get

Area =6.25×3.14

Area=19.63cm²

(c) Radius (r)=8 ft

The area of circle is

Area=π(8)²

Area =64π

Here, π=3.14, we get

Area =64×3.14

Area=201.06ft²

(d) Diameter (d)=12cm

The area of circle is

Area=π(12/2)²

Area =36π

Here, π=3.14, we get

Area =36×3.14

Area=113.1cm²

(e) Diameter (d)=20km

The area of circle is

Area=π(20/2)²

Area =100π

Here, π=3.14, we get

Area =100×3.14

Area=314.16km²

(f) Diameter (d)=15mm

The area of circle is

Area=π(15/2)²

Area =56.25π

Here, π=3.14, we get

Area =56.25×3.14

Area=176.71mm²

(g) Radius (r)=16yd

The area of circle is

Area=π(16)²

Area =256π

Here, π=3.14, we get

Area =256×3.14

Area=804.25yd²

Hence, the area of circle having radius and diameter is  radius 3cm is 28.27 cm², diameter 5cm is 19.63 cm², radius 8 ft is 201.06 ft², diameter is 113.1 cm², diameter 20 km is 314.16 km², diameter 15 mm is 176.71 mm² and radius 16 yd is 804.25 yd².

Learn more about the area of circle from here brainly.com/question/17096708

#SPJ9

3 0
1 year ago
Other questions:
  • Write an algebraic expression that models each word phrase four more than a number b
    14·1 answer
  • Chris read 20 pages of a novel each day for 9 days during summer break. How many total pages did Chris read during summer break?
    12·1 answer
  • 6 ponds equals how many ounces
    12·1 answer
  • What is 3/16 as a decimal ?
    13·2 answers
  • Find the degree of this polynomial<br> -7b2 + b + 6
    8·2 answers
  • 9 x 100 + 1 x 1 +3 x 1/100
    6·2 answers
  • Which function is not defined at 0? Please help urgent
    15·1 answer
  • Please help i dont understand this
    7·1 answer
  • A peregrine falcon in flight can travel as fast as 200 miles per hour. Which representation does NOT show y, the total number of
    6·1 answer
  • Someone please help me with this, I will really appreciate it!! Please.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!