Q.6:
4.5x4.5x3.14=63.585
63.585divide by 2=31.7925
10x3=30
30+31.7925=61.7925
Q.7:
4x4x3.14=50.24
50.24x4=200.96
65x65=4225
4225-200.96=4024.04
round off u get 4024
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