Slide19.JPG

Slide20.JPG
Slide21.JPG


Transcript

Example 10 Find the perimeter of the given shape (Fig 11.32) (Take Ο€ = 22/7).Here, Perimeter of given shape = 4 Γ— Length of curved blue line = 4 Γ— Circumference of half circle Let’s find circumference of half circle Circumference of half circle Diameter = 14 cm Radius = r = π·π‘–π‘Žπ‘šπ‘’π‘‘π‘’π‘Ÿ/2 = 14/2 = 7 cm Circumference of half circle = 1/2 Γ— Circumference of circle = 𝟏/𝟐 Γ— 2πœ‹r = πœ‹r = 22/7 Γ— 7 = 22 cm Now, Perimeter of given shape = 4 Γ— Circumference of half circle = 4 Γ— 22 = 88 cm Hence, perimeter of given shape is 88 cm

Go Ad-free
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.