please answer the questions with explanation (11,12,13,14)
Answers
Answer:
1.
a person walk at the rate of= 4 km/ hour
area=2500m^2
area of square park=2500sq m.
side of the park =sq rt of 2500= 50m
perimeter of the square = 4×50=200m.
in round he has to travel 200 m
so In 5 round he needs 5*200=1000m to travel
he needs 15 min to go 5 round of the park.
2. Let the width be x
length is 3x
perimeter of rectangle=2(l+b)
72=2(x+3x)
72=2x×4x
36=4x
9=x
so the length is 3×9=27
Area of rectangle =l*b=9×27=243cm.
3.Dimensions of the land of the farmer =250m×160m
cost of the land revenue=Rs 1500per hectare
To find total revenue paid by the farmer
area of land =Length ×breadth
=250×160=40000m^2
we know that one hectare = 10000 m^2
so area of the land 40000m^2= 4 hectare .
cost of revenue=1500×4=6000
therefore revenue that farmer has to pay is Rs 6000