Question

please answer the questions with explanation (11,12,13,14)​

Answer 1

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