Question

If it costs $1600 to fence a rectangular park of length 20m at the rate of $25 per m square, find the breadth of the park and it's perimeter. Also, find the area of the field

Answer 1

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Costs 25Rs for each m2

For 1600Rs , area will be 160025=64m
If length is 20m, then
breadth = Area/length=64/20=16/5m=3.2m
Perimeter = 2(length + breadth) = 2(20+3.2)=46.4m

Answer 2

Hi,

COST OF FENCING A RECTANGULAR PARK= $1600

LENGTH OF RECTANGULAR PARK =20m

RATE OF FENCING 1 m²=$25

AREA=1600/25 = 320/5 = (64) STANDARD FORM

BREADTH=AREA/LENGTH

B = 64/20=32/10=16/5=3.2m

PERIMETER=2 ˣ ( l + b )

                    = 2 ˣ ( 20 + 3.2)

                    = 2 ˣ 23.2

                    = 46.4 m

FINAL ANSWER: AREA=64m² , BREADTH=3.2m , PERIMETER=46.4m