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
torisob [31]
3 years ago
5

Calculate the perimeter of a semi circle whose radius is 21cm​

Mathematics
1 answer:
torisob [31]3 years ago
6 0

Radius of semicircle r = 21 cm

Perimeter of semicircle

= pi*r + 2r

= (22/7)*21 + 2*21

= 22*3 + 42

= 66 + 42

= 108 cm

You might be interested in
Solve the following automotive-services problem. Voltage = 80 v Current = 40 amps Resistance = ?
Andrej [43]
Resistance = voltage/currant
Resistance= 80/40 = 2
Resistance = 2 (Ohms)
7 0
3 years ago
Can someone help me with this?
Margarita [4]

\large \text{Hello keep learning!}

As we know that one million is 1,000,000.

So we can write it as:-

➢ 1×10⁶

5 0
3 years ago
Read 2 more answers
40% discount on all items <br><br> What is the discount on $60
malfutka [58]
40% is the same as 40/100 so just multiply that with 60

60 x 40/100 =  24

thats how much is taken OFF so

60 is the original price and you get 40% discount off which is $24 on this specific item. how much is the price now?


8 0
3 years ago
Steven buys 24 bags of flour. Each bag holds 25 pounds of flour. How much flour did Steven buy?
frez [133]
If he has 24 bags and each is 25 pounds, you need to multiply:

24x25=600
Steven bought 600 pounds of flour.
4 0
3 years ago
How do I show my work for solving the radius of a circle if the area is 78.5 cm^2
SIZIF [17.4K]

9514 1404 393

Answer:

  radius = 5 cm

Step-by-step explanation:

The point of "show your work" is to have to do exactly that. If you know the answer to the problem, you are being requested to show how you got it. If you got it by using a web calculator, then show your input and its result.

__

If you worked the problem yourself, you probably did it by filling in numbers in the equation for the area of a circle:

  A = πr²

  78.5 = 3.14×r²

Dividing both sides by 3.14 gives the square of the radius:

  78.4/3.14 = r² = 25

Taking the positive square root gives the radius:

  r = √25 = 5

The area is in square centimeters, so the radius is in centimeters:

  radius = 5 cm

7 0
2 years ago
Other questions:
  • Abby walked 1 1/6 miles on Monday, 2 1/3 miles on Tuesday, and 4 1/12 miles on Wednesday. What is the total distance Abby walked
    10·1 answer
  • * WILL GIVE BRIANLIEST 5 QS PLZZ HELP MEH ;D*(07.01)What is the solution to the equation 5x = 40?
    8·1 answer
  • - 30 = 5 ( x + 11 ) x =
    13·1 answer
  • Consider the following matrix A, and let B = A−1. Find b31, b32, and b33. (i.e., find the entries in the third row of  A−1.
    12·1 answer
  • Part 2 from the half of the paper! Help I’ll make u brainly
    9·1 answer
  • Please help..Thank you❤️
    8·2 answers
  • What is the common difference -30,70,170,270
    12·1 answer
  • THE FIRST ANSWER GETS BRAINLIEST AND 50 POINTS<br> 9(x-5)+8(x+5)
    8·2 answers
  • Jose takes a job that offers a monthly starting salary of ​$2500 and guarantees him a monthly raise of ​130$ during his first ye
    5·1 answer
  • Which Set of Ordered Pairs Doesn’t Represent A Function DUE TONIGHT WILL GIVE BRAINLIEST
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!