Answers

2016-02-16T17:57:29+05:30
Big circle :-
Diamter = 150 m
⇒Radius = 75 m

Small Circle:-
radius = 20 m

Area shaded region = Area Big Circle - Area Small circle.
⇒ πR² - πr²
22/7 * 75*75 - 22/7*20*20
123750/7 - 8800/7
17678.6 - 1257.1 m²
16421.5 m²

area portion left out is 16421.5m².

Thank you.....!!!!
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Yours, Jahnavi.
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