Question

The length and breadth of a rectangular garden are 8n the ratio 7:3 If the area of the field is 525m²,then find the cost of fencing it at $75 per m.​

Answer 1

Answer:

Let the length of the rectangular garden be 4x.

Let the length of the rectangular garden be 4x.Then breadth=3x.

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadth

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10Hence, length=4x=40m

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10Hence, length=4x=40mBreadth=3x=30m

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10Hence, length=4x=40mBreadth=3x=30mPerimeter=2(l+b)=2(40+30)=2×70=140m

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10Hence, length=4x=40mBreadth=3x=30mPerimeter=2(l+b)=2(40+30)=2×70=140mCost of fencing 1m=Rs.7.50

Let the length of the rectangular garden be 4x.Then breadth=3x.Area of rectangle=length×breadthSo, area of the rectangular garden=12x2Area(given)=1200⇒12x2=1200⇒x=10Hence, length=4x=40mBreadth=3x=30mPerimeter=2(l+b)=2(40+30)=2×70=140mCost of fencing 1m=Rs.7.50So, cost of fencing 140m=140×7.50=Rs.1050

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