Question

6. 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 and also the increase in the area
of the flower bed.
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Answer 1

Answer:

It is given that the bed is 2m 80cm long. It is extended by digging a strip 30 cm wide all around it. The area of new bed is 115600 cm². Therefore the change in area is 37200 cm².

Answer 2

Answer:

The area of new bed is 115600 cm². The change in area is 37200 cm².

Step-by-step explanation:

The area of a square is

where, a is side length.

It is given that the bed is 2m 80cm long.

The area of bed is

It is extended by digging a strip 30 cm wide all around it.

The new side length is

*The area of new bed is

The area of new bed is 115600 cm².

Change in area is

Therefore the change in area is 37200 cm².*

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