Question

7. Find the cost of fencing a rectangular garden at the rate of 7.5 per mit its length and breadth are in the
ratio 4:3 and its area is 1200 m².
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Answer 1

Answer:

area of rectangle= lb

1200= 4x × 3x

1200= 12x

x= 1200/12

x= 100

l=4x

= 4×100

=400

b=3x

= 3× 100

= 300

cost for fencing= (400+400+300+300) ×7.5

= 1400×7.5

= 10,500 rupees