Each side of a square flower bed is 2m 80cm long. It is extended by digging a strip 30cm wide all around
it. Find
(I
)the area of the enlarged flower bed.
(ii) the increase in the area of the flower bed.
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Answer:
Lenth of side of flower bed = 2m 80cm
Lenth of side of strip = 30cm
∴ Increased length of side = 2m 80cm + 30cm (Can also be written as 2.80m + 0.30m)
= 3m 1cm (Or 3.01m)
I) Area of a square = side × side
∴ Area of enlargened flower bed = 3m 1cm × 3m 1cm (Can also be written as 3.01m × 3.01m)
= 906m 1cm (Or 906.01m)
II) Increase in area = Enlargened area - Original area
∵ Original area = 2m 80cm × 2m 80cm (Can also be written as 2.80m×2.80m)
= 7m 84cm
∴ Increase in area = 906m 1cm - 7m 84cm (Can also be written as 906.01m - 7.84m)
= 898m 17cm
I hope it's correct and that it helps you :D
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