द साइड ऑफ ए रैक्टेंगल आर 20 सेंटीमीटर एंड 15 सेंटीमीटर इस साइड ऑफ द रैक्टेंगल इज इनक्रीस बाय 20% फाइंड द परसेंटेज इंक्रीज इन द एरिया
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Step-by-step explanation:
Area of Rectangle= 20 × 15= 300cm
Now there is the increment in 15cm by 20%
20% of 15cm
= (20/100) × 15
= 3cm
Now add 3cm with 15cm = 3+15= 18cm
Area after increment
18 × 20 = 360cm
Previous area of rect. - New area of rect.
300 - 360
=60
Now convert 60 in percentage form
(60/360)×100
=100/6
=50/3
=16.66%
THNKYOU!!
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