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area of sector AOB A1 =60°×22×42×42/7×360°
=924 Sq. cm.
area of small circle A2
=22×21×21/7
=1386 sq.cm.
area of big circle A3
= 22×42×42/7
=5544 Sq. cm.
area of shaded region (A3-A2)-A1
=(5544-1386)-924
= 3234 Sq. cm.
=924 Sq. cm.
area of small circle A2
=22×21×21/7
=1386 sq.cm.
area of big circle A3
= 22×42×42/7
=5544 Sq. cm.
area of shaded region (A3-A2)-A1
=(5544-1386)-924
= 3234 Sq. cm.
anjalika32:
please don't do this
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