Question

9.
Find the radius of a circle whose circumference is
(a) 22 cm
(b) 17.6 cm
(c) 30.8 cm
[Take A = pie 22 in each case.]





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Answer 1

Answer:

a - 44/7

b- 22/7×2×17.6

c - 22/7×2×30.8

Answer 2

Explanation:

Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of force. By resolving force →F into two components : (i) F cosθ in the direction of displacement of the body. (ii) F sinθ in the perpendicular direction of displacement of the body.