Get live Maths 1-on-1 Classs - Class 6 to 12
Ex 11.3, 7 - Chapter 11 Class 7 Perimeter and Area
Last updated at March 30, 2023 by Teachoo
Ex 11.3
Ex 11.3, 1 (a)
Ex 11.3, 1 (b) Important
Ex 11.3, 1 (c)
Ex 11.3, 2 (a) Important
Ex 11.3, 2 (b) Important
Ex 11.3, 2 (c)
Ex 11.3, 3
Ex 11.3, 4 Important
Ex 11.3, 5 Important
Ex 11.3, 6
Ex 11.3, 7 Important You are here
Ex 11.3, 8
Ex 11.3, 9 Important
Ex 11.3, 10 Important
Ex 11.3, 11
Ex 11.3, 12 Important
Ex 11.3, 13 Important
Ex 11.3, 14
Ex 11.3, 15
Ex 11.3, 16 Important
Ex 11.3, 17 Important
Transcript
Ex 11.3, 7 Find the perimeter of the adjoining figure, which is a semicircle including its diameter. Diameter = AB = 10 cm Radius = r = 𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟/2 = 10/2 = 5 cm Perimeter of semicircle = Length of semicircle part + Length of AB = 1/2 × 2𝜋r + 2r = 𝜋r + 2r = 3.14 × 5 + 2 × 5 = 314/100 × 5 + 10 = 314/20 + 10 = 157/10 + 10 = 15.7 + 10 = 15.7 + 10 = 25.7 cm ∴ Perimeter is 25.7 cm
