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
Yanka [14]
3 years ago
12

Circumference (rounding)

Mathematics
2 answers:
koban [17]3 years ago
5 0

Answer:

radius r = 3.1 in

diameter d = 6.2 in

circumference C = 19.4778745 in

area A = 30.1907054 in2

LUCKY_DIMON [66]3 years ago
4 0

Answer:

19.5

Step-by-step explanation:

Circumference is radius multiplied by 2, then multiplied by pi.

3.1 × 2= 6.2

6.2 × π= 19.477 ≈ 19.5

π also equals 3.14

You might be interested in
Jillian is making a paper flower motif for an art project the flower she is making has 4 petals each petal is made of three semi
Alla [95]

Answer:

Area = 216\pi

Step-by-step explanation:

Given

See attachment for semicircles

Required

The area of the paper

First, calculate the area of each petal.

The petal is made up of:

1. Semicircle of diameter 12cm

2. Semicircle of diameter 18cm (i.e. 12cm + 6cm)

3. A hole semicircle of diameter 6cm

The area of each semicircle is calculated as follows:

Area = \frac{\pi r^2}{2}

For (1):

d = 12cm --- diameter

r = 0.5 * d = 0.5* 12cm = 6cm --- radius

So:

A_1 = \frac{\pi * 6^2}{2}

Evaluate the exponent

A_1 = \frac{\pi * 36}{2}

Divide 36 by 2

A_1 = 18\pi

For (2):

d = 18cm

r = 0.5* 18cm = 9cm

So:

A_2 = \frac{\pi * 9^2}{2}

A_2 = \frac{\pi * 81}{2}

A_2 = 40.5\pi

For (3):

d = 6cm

r = 0.5* 6cm = 3cm

So:

A_3 = \frac{\pi * 3^2}{2}

A_3 = \frac{\pi * 9}{2}

A_3 = 4.5\pi

Recall that (3) is a hole.

So, the area (A) of a petal is:

A = A_1 + A_2 - A_3

A = 18\pi + 40.5\pi - 4.5\pi

A = 54\pi

The paper uses 4 petals.

So:

Area  = 4 * A

Area = 4 * 54\pi

Area = 216\pi

4 0
3 years ago
ABCD is a parallelogram.
umka21 [38]

9514 1404 393

Answer:

  6 cm

Step-by-step explanation:

The area of the parallelogram is the same, either way you figure it.

  A = bh

  A = CD(length ⊥ to CD)

  A = (9 cm)(8 cm) = 72 cm²

__

  A = AD(length ⊥ AD)

  72 cm² = (12 cm)(length ⊥ AD)

  (length ⊥ AD) = (72 cm²)/(12 cm) = 6 cm

The perpendicular distance of AD from BC is 6 cm.

4 0
3 years ago
Which of the following number cannot represent the 3 sides of a triangle?
Advocard [28]

Answer:

d  5,16,21 Am sure I think

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Question 12 (5 points) It takes Eddie 2 hours to shovel the snow from a driveway. Brad can shovel the snow from the same drivewa
Hoochie [10]

Answer: jeiehebe

Step-by-step explanation:

Wggehehjee

4 0
3 years ago
Read 2 more answers
I really need help!!
allochka39001 [22]

Answer:

6

Step-by-step explanation:

Because if two parallel lines are intersect by a transversal then alternate exterior angles are equal.

so, picture where the 3x is as 1 and where the D is 2. Under the 3x (the angle under it) will be 3 and the angle under D is 4.

Now lets number the next angles. E will be 6 and the angle before it will be 5. where the 6x is will be 7 and next to it will be 8. So basically number all the angles from up to down.

So, basically go get 6 as your answer, '2' and '7' will always be the same number for the answer. Iits really confusing i know, but just search Transversal parallel lines, and I'm sure more will come up (if you want to learn more, its up to you)

5 0
3 years ago
Other questions:
  • How do you complete problem number 4?
    9·1 answer
  • What is 1/6 times 1/6
    7·2 answers
  • Please help thank you so much ​
    8·1 answer
  • 27 + (8-5) -am looking for the answer of number 7
    12·1 answer
  • What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
    15·2 answers
  • What is the base of a triangle that has an area of 60 square centimeters and a height of 8 centimeters?
    6·1 answer
  • Which graph represents a proportional relationship? <br><br> A.<br><br> B.<br><br> C.<br><br> D.
    13·2 answers
  • Credit card A has an APR of 27.2% and an annual fee of $96, while credit card B has an APR of 30.3% and no annual fee. All else
    8·1 answer
  • What is 98×63-32×69=
    8·2 answers
  • Tìm
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!