Diese Präsentation wurde erfolgreich gemeldet.
Wir verwenden Ihre LinkedIn Profilangaben und Informationen zu Ihren Aktivitäten, um Anzeigen zu personalisieren und Ihnen relevantere Inhalte anzuzeigen. Sie können Ihre Anzeigeneinstellungen jederzeit ändern.
Areas Related To Circles 
Problems based on 
Perimeter and area of a circle 
Chapter : Areas Related To Circles Website: w...
Problems based on 
Perimeter and area of a circle 
Q) Find the circumference and area of the circle of radius 
7.2cm. 
Giv...
Problems based on 
Perimeter and area of a circle 
Solution: Let the radius of the circle be ‘r’ 
r=7.2cm ---------- (give...
Problems based on 
Perimeter and area of a circle 
Result: a) Circumference= 45.26cm 
b) Area= 162.93cm2 
Hence, the circu...
Problems based on 
Perimeter and area of a circle 
Q) The diameter of a watermelon slice is 8cm. Find its 
perimeter. 
Giv...
Problems based on 
Perimeter and area of a circle 
Solution: Let ‘r’ be the radius of the watermelon slice. 
8cm 
r = Diam...
Problems based on 
Perimeter and area of a circle 
Q) The difference between the circumference and diameter of a 
wheel is...
Problems based on 
Perimeter and area of a circle 
Solution: Let the radius of the wheel be ‘r’ 
Circumference-Diameter = ...
Perimeter and area of a circle 
= 9x7 cm 
15 
= 3x7 cm 
5 
= 21 cm 
5 
= 4.2cm 
Problems based on 
Result: Radius of the w...
Problems based on 
Perimeter and area of a circle 
Q) A wire is in the form of a circle of radius 50cm. It is bent 
into a...
Problems based on 
Perimeter and area of a circle 
Solution: Let the radius of the circle be ‘r’ 
r = 50cm ---------- (giv...
Problems based on 
Perimeter and area of a circle 
Let ‘x’ be the side of the square. 
Perimeter of the square = Length of...
Visit us on – www.letstute.com 
Subscribe us on www.youtube.com/letstute 
Thank you
Nächste SlideShare
Wird geladen in …5
×

Areas related to circles - perimeter and area of a circle for class 10 maths.

In this video you will learn Areas related to circles - perimeter and area of a circle

To watch more such videos -


Visit - www.letstute.com
YouTube - www.youtube.com/letstute



Thank you

  • Loggen Sie sich ein, um Kommentare anzuzeigen.

Areas related to circles - perimeter and area of a circle for class 10 maths.

  1. 1. Areas Related To Circles Problems based on Perimeter and area of a circle Chapter : Areas Related To Circles Website: www.letstute.com
  2. 2. Problems based on Perimeter and area of a circle Q) Find the circumference and area of the circle of radius 7.2cm. Given: Radius of the circle = 7.2cm To Find: a) Circumference of the circle = ? b) Area of the circle = ? O 7.2 cm Chapter : Areas Related To Circles Website: www.letstute.com
  3. 3. Problems based on Perimeter and area of a circle Solution: Let the radius of the circle be ‘r’ r=7.2cm ---------- (given) a) Circumference = 2πr =2x22x7.2cm 7 = 45.26 cm b) Area = πr2 = 22x7.2x7.2cm2 7 = 162.93 cm2 O 7.2 cm Chapter : Areas Related To Circles Website: www.letstute.com
  4. 4. Problems based on Perimeter and area of a circle Result: a) Circumference= 45.26cm b) Area= 162.93cm2 Hence, the circumference of the circle is and its area is 45.26cm 162.93 cm2 O 7.2 cm Chapter : Areas Related To Circles Website: www.letstute.com
  5. 5. Problems based on Perimeter and area of a circle Q) The diameter of a watermelon slice is 8cm. Find its perimeter. Given: Diameter = 8cm To Find: Perimeter of the slice = ? 8cm Chapter : Areas Related To Circles Website: www.letstute.com
  6. 6. Problems based on Perimeter and area of a circle Solution: Let ‘r’ be the radius of the watermelon slice. 8cm r = Diameter = 8cm = 4cm 2 2 Perimeter = 1x 2πr+2r of the slice 2 22 1     4  2 4   2 2 =20.57 cm    7 20.57cm Result: Perimeter of the slice = 20.57 cm Hence, the perimeter of the watermelon slice is Chapter : Areas Related To Circles Website: www.letstute.com
  7. 7. Problems based on Perimeter and area of a circle Q) The difference between the circumference and diameter of a wheel is 18cm. Find the radius of the wheel. Given: Circumference - diameter=18cm To Find: Radius of the wheel = ? O ? cm Chapter : Areas Related To Circles Website: www.letstute.com
  8. 8. Problems based on Perimeter and area of a circle Solution: Let the radius of the wheel be ‘r’ Circumference-Diameter = 18cm ------- (Given) 2πr-2r = 18cm 2r(π-1) = 18cm 2r  1  = 18cm  2r  = 18cm 2r x 15 = 18cm     22 7 7 7 r = 18x7 cm 2x15    22 7   O ? cm Chapter : Areas Related To Circles Website: www.letstute.com
  9. 9. Perimeter and area of a circle = 9x7 cm 15 = 3x7 cm 5 = 21 cm 5 = 4.2cm Problems based on Result: Radius of the wheel= 4.2cm Hence, the radius of the wheel is 4.2cm O ? cm Chapter : Areas Related To Circles Website: www.letstute.com
  10. 10. Problems based on Perimeter and area of a circle Q) A wire is in the form of a circle of radius 50cm. It is bent into a square. Determine the side of the square. O Before Given : Radius of the circle = 50 cm To Find: Side of the square = ? Chapter : Areas Related To Circles Website: www.letstute.com
  11. 11. Problems based on Perimeter and area of a circle Solution: Let the radius of the circle be ‘r’ r = 50cm ---------- (given) Length of the wire = Circumference of the circle = 2πr = 2x22x50cm 7 = 2200 cm 7 = 314.28cm O Before Chapter : Areas Related To Circles Website: www.letstute.com
  12. 12. Problems based on Perimeter and area of a circle Let ‘x’ be the side of the square. Perimeter of the square = Length of the wire (circumference) 4x = 314.28 x = 314.28 4 x = 78.57 cm X cm After Hence, the side of the square is 78.57cm Chapter : Areas Related To Circles Website: www.letstute.com
  13. 13. Visit us on – www.letstute.com Subscribe us on www.youtube.com/letstute Thank you

×