Get live Maths 1-on-1 Classs - Class 6 to 12
Example 16 - Chapter 11 Class 7 Perimeter and Area
Last updated at March 30, 2023 by Teachoo
Examples
Example 1
Example 2
Example 3 Important
Example 4 Important
Example 5
Example 6
Example 7 Important
Example 8 Important
Example 9 (i)
Example 9 (ii) Important
Example 10
Example 11 Important
Example 12 Important
Example 13
Example 14
Example 15 Important
Example 16 Important You are here
Example 17 Important
Example 18
Example 19 Important
Example 20
Example 21 Important
Example 22 Important
Transcript
Example 16 Sudhanshu divides a circular disc of radius 7 cm in two equal parts. What is the perimeter of each semicircular shape disc? (Use π = 22/7) Now, Perimeter of semicircle = Length of semicircle part + Length of AB Length of semicircle part Radius = r = 7 cm Length of semicircle part = 1/2 × Circumference of circle = 1/2 × 2𝜋r = 𝜋 r = 22/7 × 7 = 22 cm Length of AB AB = 2 × Radius = 2 × 7 = 14 cm Thus, Perimeter of semicircle = Length of semicircle part + Length of AB = 22 + 14 = 36 cm ∴ Perimeter is 36 cm
