Question

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Answer 1

Answer:

Answer:

Step-by-step explanation:

=> Here, A pendulum of 14cm long oscillates  through an angle of 12°

thus, Length of pendulum, r = 14 cm

And, θ = 12 degree = 12 x π/180 = π/15

=> Thus, the length of path described by its extrimities is,

Length of path = r x θ

                       = 14 x π/15

                       = 14π/ 15 cm

                       = 43.96 / 15 cm

                       = 2.93 cm

Hence, the length of the path is 2.93 cm.

Step-by-step explanation:

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Answer 2

Answer & step-by-step instructions:

From the formula about circle and radius,

S=R∅[S=arc length,R=radius,∅=Angle]

R=14cm,∅=12°=

$\frac{12}{180} \times \pi \\ = \frac{ {\pi}^{c} }{15}$

S=R×∅=14×π^c/15=14π^c/15 option D is the correct answer.