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10. A square of side 80 cm, had patterns in circles of diameter 15 cm laid out
cach touching the other. Find the area of the square not covered by the circles.
d.
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Answer:
area of square =(side)square.
so,
80×80=6400cm
diameter =15
and , radius =15/2=7.5cm
pattern in circle =22/7 (we know that)
therefore,
remaining area = 6400 -22/7×7.5×7.5cm
6223.21cm.
Explanation:
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