In the given fig-7, a rectangular building is surrounded by a lawn. a) Find the area of the lawn. b) If one bag of grass seeds covers 200 square meters, How many bags are required to seed the lawn?
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Answer:
a) 6500 Sq. Ft.
b) 3 bags of grass seed
Step-by-step explanation:
1st part
AREA OF BUILDING =AREA OF THE RECTANGLE
Therefore, area of rectangle = L*B
=50*62
=3100 Sq. Ft
2nd Part
Area of whole Trapezium abdc=
Area= 1/2 * 80* (100 +140)
= 9600 Sq. Ft.
a) Area of Lawn= Area of whole plot -Area of building
= 9600-3100
= 6500Sq. Ft
b) No. of grass seed bags needed= Area of lawn /area covered by 1 grass seed bag.
{NOTE :- 1 SQ.METRE=10.764SQ.FT}
=6500/2152.78
=3 bags (approx.)
THEREFORE, THREE BAGS OF GRASS SEED WOULD BE NEEDED TO COVER THE LAWN.
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