A chord of a circle of radius 10cm subtends a right angle at the centre, then the area of minor sector is??
with sum
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A chord of a circle of radius 10cm subtends a right angle at the centre, then the area of minor sector is??
with sum
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as it subtends right angle its area will πr²/4
by Pythagoras theorem
2r² = 100
r = 5√2
so the area of quarter is 50π/4