Each side of a square flower bed is 2 m 80 cm long . It is extended by digging a strip 30 cm wide all around it. Find the area of the enlarged flower bed & also the increase in the area of the flower bed .
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Each side of flower bed = 3.8 m
Area = 3.8 × 3.8
Area of flower bed before extension = 14.44 sq m
If it is extended by digging a strip of 50 cm wide all around it, then the new side will be = 3.8 + 1.0 = 4.8 m
Area of the flower bed after extension = 4.8 × 4.8
Area of enlarged flower bed = 23.04 sq m
Increase in the area of flower bed = 23.04 - 14.44
= 8.6 sq m
Area = 3.8 × 3.8
Area of flower bed before extension = 14.44 sq m
If it is extended by digging a strip of 50 cm wide all around it, then the new side will be = 3.8 + 1.0 = 4.8 m
Area of the flower bed after extension = 4.8 × 4.8
Area of enlarged flower bed = 23.04 sq m
Increase in the area of flower bed = 23.04 - 14.44
= 8.6 sq m
dyid:
But it is not the exact ans. I am confused !!!
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first convert 2m into cm which is 200cm
now plus 200+80=280 so 280 is the length
and breadth=30cm
Area of rectangle=2 (l+b)
=2 (280+30)
=2(310)
=620cm
now plus 200+80=280 so 280 is the length
and breadth=30cm
Area of rectangle=2 (l+b)
=2 (280+30)
=2(310)
=620cm
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