a triangular park has sides 120m 80m and 50 m . A gardner ramu has to put a fence all round it and also plant same trees inside the garden to get clean air . i) find the cost of fencing at the rate of Rs 5 per meter ii) find the area where Ramu plant the trees .
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Answered by
20
I) the cost of fencing=120m +80m+50m
=250m÷5
=50
= 50 rupees
iI) = 120×80×50 m
= the area of triangle is 180000
=250m÷5
=50
= 50 rupees
iI) = 120×80×50 m
= the area of triangle is 180000
Answered by
6
Answer:
1) Perimeter =120+50+80
= 250m²
Per meter cost =5 rupee
250 m² costs =250×5
1250rupees
2) Area
Semi perimeter =120+50+80/2
=125
√s(s-a) (s-b) (s-c)
√125(125-120) (125-80) (125-50) m²
375√15m²
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