Q1.FROM A RECTANGULER METAL SHEET SIDES IS A 30 CM AND A 4O CM A CIRCULER SHEET AS BIG AS POSSIBLE IS CUT OFF. FIND THE AREA OF REMAINING SHEET ?
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From a rectangular metal sheet size, 20 cm by 30 cm, a circular sheet as big as possible is cut. Find the remaining sheet.
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ANSWER
Diameter of largest circle=length of the smallest side of rectangle
Area of rectangle=l×b=30×20=600cm
2
Area of circle=πr
2
=π(
2
d
)
2
=π×(
2
20
)
2
=314.16cm
2
Remaining area=600−314.16=285.84cm
2
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