From a square cardboard of area 196 cm2 ,a circle with biggest area is cut out. Find the area of the remaining cardboard.
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Answer:
Area of square = a²
196 = a²
Square root both sides
a = 14 cm
So biggest circle is cut with radius of 7 cm
Area of circle = π to
= 22*7*7/7
= 154 cm²
Remaining cardboard = area of cardboard - area of circle
= 196 - 154
= 42 cm²
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