All categories

3 years ago

The diameter of a circle is 20 in. Find its circumference in terms of \piπ.

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

$C=2\pi r$ since d=2r$ \\ \\ C=\pi d,\ d=20\\ \\ C=20\pi in$

You might be interested in

B) A white shirt costs $. 2.50, and a blue shirt costs $. 1.50

djyliett [7]

<h3>Answer :</h3>

Cost of white shirt = 2.50 $

Cost of blue shirt = 1.50 $

We have asked to find percentage difference $.$

_________________________________

$:\implies\sf\:\dfrac{cost_{blue}-cost_{white}}{cost_{blue}+cost_{white}}\times 100$

$:\implies\sf\:\dfrac{2.50-1.50}{2.50+1.50}\times 100$

$:\implies\sf\:\dfrac{1}{4}\times 100$

$:\implies\:\boxed{\bf{\gray{25\:\%}}}$

4 0

3 years ago

Please help me I really need help

Anton [14]

The new perimeter will be 3 times the old perimeter.

Original perimeter:
2(8+7) = 2(15) = 30 yds

New perimeter once they are tripled:
3 x 8 = 24
3 x 7 = 21
2(24+21) = 2(45) = 90 yds

30 x 3 = 90

4 0

2 years ago

Read 2 more answers

Need help on this question

Sveta_85 [38]

Angle 2 is also 122 because angles that are across from eachother (vertical angles) are always equal.
Correct answer= A

6 0

3 years ago

Robert climbed 775 steps and 12 1/2 minutes. How many steps did he average per minute?

UNO [17]

Answer:

Since the question requires you to give the answer in terms of steps/minute, the first step would be to convert hours to minutes: 12.5 hours = 750 minutes. Next, if he took 775 steps in 750 minutes, how many would he take in 1 minute? This requires you to set up the question as a proportion: (775 steps/ 750 minutes) = (x steps/1 minute)

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

-10 divided by 7 1/5

mrs_skeptik [129]

Answer:-1.38888888889

Step-by-step explanation:

8 0

3 years ago