Answers

2016-02-28T20:53:08+05:30
Area left=area of garden -area of pond
22/7x75x75 _22/7x20x20
=17678.57_ 1257.14=16421.43msquare
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2016-02-28T21:09:24+05:30
Given that 
according to the sum π(R²-r²)
from that R =75 , R = 20
= π(R²-r²)
= π(75²-20²)
= 22/7(5625-400)
= 22/7(5255)
= 1159950/7
= 165707.14857.
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