Question

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Answer 1

Answer:

$\: b .7\pi \\ a.14\pi \\ a.2.5\pi$

Explanation:

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Answer 2

Answer:

7) • Radius = 7 m

If a persons starts his journey from point A and ends his journey at point A. Then the total distance covered by the person is:

=> Distance = Circumference of circle

=> Distance = 2πr

=> Distance = 2 × π × 7

=> Distance = 14π

Hence, option A) 14π is the correct answer.

8) • Radius = 7 m

If person is starting his journey from A and ending his journey at point C.

=> Distance = Circumference of semicircle

=> Distance = πr

=> Distance = 7π

Hence, option B) 7π is the correct answer.

9) If a person is starting his journey from point A and ending his journey at point D. The person will cover ¼th part of the Circle.

=> Distance = (2πr)/4

=> Distance = (2π × 7)/4

=> Distance = 14π/4

=> Distance = 3.5π

Hence, option D) is the correct answer.