Perimeter to area

Calculate the area of a circle with the perimeter 15 meters.

Correct result:

S =  17.905 m

Solution:

o=15 r=o/(2π)=15/(2⋅ 3.1416)≐2.3873 S=π⋅ r2=3.1416⋅ 2.38732=17.905 mo=15 \ \\ r=o / (2 \pi)=15 / (2 \cdot \ 3.1416) \doteq 2.3873 \ \\ S=\pi \cdot \ r^2=3.1416 \cdot \ 2.3873^2=17.905 \ \text{m}

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!


Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Next similar math problems:

  • Area to perimeter
    circle11_3 Calculate circle circumference if its area is 254.34cm2
  • Four circles
    circles_2 1) Calculate the circle radius if its area is 400 cm square 2) Calculate the radius of the circle whose circumference is 400 cm. 3) Calculate circle circumference if its area is 400 cm square 4) Calculate the circle's area if perimeter 400 cm.
  • Circle - easy 2
    circle_3 The circle has a radius 6 cm. Calculate:
  • Circle
    circle How big is area of circle if its circumference is 80.6 cm?
  • Circle simple
    circles_3 Circumference of a circle is 6.28. What is the area of the circle?
  • Rectangle 45
    rectangles2_4 The perimeter of a rectangle is 60cm. If the length of the rectangle is 20cm. a)find the width b)find the area.
  • Circle - simple
    kruh The circumference of a circle is 198 mm. How long in mm is its diameter?
  • The diameter
    circles The diameter of a circle is 4 feet. What is the circle's circumference?
  • Circle
    circle_1 What is the radius of the circle whose perimeter is 6 cm?
  • Clock hands
    clocks2_16 The second hand has a length of 1.5 cm. How long does the endpoint of this hand travel in one day?
  • Bicycle wheel
    cyklo2_2 After driving 157 m bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
  • Cable
    wire Cable consists of 8 strands, each strand consists of 12 wires with diameter d = 0.5 mm. Calculate the cross-section of the cable.
  • Circle area
    circle3 Calculate the circle area with a radius of 1.2 m.
  • 22/7 circle
    red_circle Calculate approximately area of a circle with radius 20 cm. When calculating π use 22/7.
  • Hotel
    hotel The hotel has a p floors each floor has i rooms from which the third are single and the others are double. Represents the number of beds in hotel.
  • Expression
    expr_2 Solve for a specified variable: P=a+4b+3c, for a
  • Simplify
    numbers3_1 Simplify the following problem and express as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5]