Hariprasad's triangular field has sides of 90 m, 80 m and 70 m. how much barbed wire will need for the field if he uses 3 lengths of wire along each side How much will he have to pay for the wire if it costs Rs 50 per metre?
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Answer:
720m
3600rs
Step-by-step explanation:
The lengths of three sides of triangular field are 90 m,80 m and 70 m
The Perimeter of the field =90 m+80 m+70 m=240 m
Length of wire required to cover the field once =240 m
It is given that the former uses six lengths of wire for each side, therefore 3 times the length of covering field once is required
⇒240×3=720
cost of 1 meter of wire =Rs.50
cost of 720 m=720×50=
Rs.3600
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