Book Maths Puzzle Numerical Ability

a chord of a circle of radius 14 cm makes a right angle at the centre find the area of the major sector of the circle

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Book Other Question

from a solid cylinder whose height is 12 cm and diameter 10 cm a conical cavity of the same height and of the same diameter is curved out find the total surface area of the remaining solid find the area of a triangle whose base is 25 cm and height is 10.8 cm