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
abruzzese [7]
3 years ago
11

Find the perimeter of a semi circle whose diameter is 21cm​

Mathematics
1 answer:
Gala2k [10]3 years ago
4 0

Answer:

<h3>\boxed{ \boxed{ \bold{  \purple{16.485 \: cm}}}}</h3>

Step-by-step explanation:

Diameter ( d ) = 21 cm

Radius is just half of the diameter

Radius ( r ) = \sf{ \frac{21}{2} } = 10.5 cm

Now, let's find the perimeter of a semi - circle :

\sf \frac{1}{2} \pi \: r \:

Plug the values

⇒\sf{ \frac{1}{2}  \times 3.14 \times 10.5}

Calculate

⇒\sf{16.485 \: cm}

Hope I helped!

Best regards!

You might be interested in
what would be the answer. katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress
Kay [80]
1.75 yards .its simple you just have to see how much youll have to multiply by 4 to get 7
7 0
3 years ago
Read 2 more answers
Consider the following expression 4x+5y+9+3y
worty [1.4K]

True statements: 1, 2, 3

3 0
3 years ago
Read 2 more answers
Tim currently makes $13.26 an hr. plus gets paid 10 days of vacation. How many days/or hours would he have to work in order to b
Marrrta [24]
I would divide the 18000 by 13.26 to get the number of hours needed.
18000/13.26~169.7 days with 8 hour shifts.
7 0
3 years ago
Read 2 more answers
0.6x + 3 = 0.1x - 7 what value of x makes the question true
svetlana [45]

Answer:x=-20

Step-by-step explanation:

7 0
3 years ago
Please help pic below
kvasek [131]
Πr^2=area 9=r 9^2=81π=254.47
7 0
3 years ago
Other questions:
  • Connor earns $1,735 each month and pays $53.10 on electricity. To the nearest tenth of a percent, what percent of Connor's earni
    7·1 answer
  • Is this right? Find the equation of the tangent line to the graph of f(x)=sec(x) at the point (0,1).
    8·1 answer
  • the school runningback, gets the ball at the 50 yard line. He gains 40 yards toward the goal line and then gets pushed back 5 ya
    13·2 answers
  • GEOMETRY PLEASE HELP!!!!!!!!!!!!
    12·1 answer
  • When you convert 100ft per second to inches per second will there be more or less than 100 inches
    14·1 answer
  • Someone help me asap math 10
    7·1 answer
  • Need help ASAP!!!The measures of angles of a triangle are shown in the figure below.Solve for x
    15·1 answer
  • What percent of 65 gives you 33
    11·1 answer
  • Mary invests £12,000 in a savings account the account pays 1.5% compound interest per year work out the value of her investment
    9·1 answer
  • What happens to the function f(x)=x4 when it becomes f′(x)=x4+5?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!