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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

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 You are here

Ex 11.3, 16 Important

Ex 11.3, 17 Important

Last updated at Dec. 12, 2018 by Teachoo

Ex 11.3, 15 Find the circumference of the inner and the outer circles, shown in the adjoining figure? (Take π = 3.14) Outer circle Radius of outer circle = R = OB = 19 m Circumference of outer circle = 2𝜋R = 2 × 3.14 × 19 = (2 × 314 × 19)/100 = 628/100 × 19 = 11932/100 = 119.32 m Inner circle Radius of inner circle = 19 − 10 = 9 cm Circumference of outer circle = 2𝜋r = 2 × 3.14 × 9 = 2 × 314/100 × 9 = 628/100 × 9 = 5652/100 = 56.52 m ∴ Circumference of outer circle is 119.32 m & Circumference of inner circle is 56.52 m