Ex 6.1, 2
Last updated at May 29, 2026 by Teachoo
None
Exercise Set 6.1
Ex 6.1, 1
You are here
You are here
Class 9
Chapter 6 Class 9 - Measuring Space: Perimeter and Area (Ganita Manjar
- Definition (and Quesitons)
- Perimeter of Different Shapes
- Perimeter of a Circle - C/D Ratio
- Pi is Irrational
- Length of an Arc of a Circle
- Problems, Puzzles, and Paradoxes on Perimeter
-
Exercise Set 6.1
- Area of Square & Rectangle
- Area of a Parallelogram
- Area of a Triangle
- Heron's Formula
- Circumcircle and Incircle of a Triangle
- Brahmaguptaβs Formula for the Area of a Cyclic 4-gon
- Squaring a Rectangle
- Exercise Set 6.2
Transcript
Ex 6.1, 2 (i) Calculate, correct to 3 significant figures, the circumference of a circle with: (i) radius 7 cm. Radius = r = 7 cm Circumference = 2πr = 2 Γ ππ/π Γ 7 = 2 Γ 22/1 Γ 1 = 44 cm β΄ Circumference of circle is 44 cm Ex 6.1, 2 (ii) Calculate, correct to 3 significant figures, the circumference of a circle with: (ii) radius 10 cm. Radius = r = 10 cm Circumference = 2πr = 2 Γ ππ/π Γ 10 = 440/7 = 62.857 cm β΄ Circumference of circle is 62.857 cm Ex 6.1, 2 (iii) Calculate, correct to 3 significant figures, the circumference of a circle with: (iii) radius 12 cm. Radius = r = 12 cm Circumference = 2πr = 2 Γ ππ/π Γ 12 = 528/7 = 75.428 cm β΄ Circumference of circle is 75.428 cm
