A square cardboard of area 255sq.cm is taken. From each corner a sector of radius 7cm and central angle 90 degree is cut off from it. Find the remaining cardboard.
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area of square=255sq.cm
now sector of radius 7 cm is cut
so there will be four like sector
and combining it will form circle
so cut area =(49π)sq.cm
so remaining area =( 225-49π )sq.cm
now sector of radius 7 cm is cut
so there will be four like sector
and combining it will form circle
so cut area =(49π)sq.cm
so remaining area =( 225-49π )sq.cm
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