Book Maths Puzzle Numerical Ability

find the distance travelled by the tip of minute hand in 10 minutes when the length of minute hand is 20 cm

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Book Other Question

a tree is broken at a height of 40 m from the horizontal ground in such a way that its tip touches the ground with an angle of 60 degree find the distance of tip from the base to the point where it touches the ground the coordinate of centroid of the triangle whose vertices are (3,2),(-3,-1),(0,-1)