Question

Q4
dimensions of the sticker?
imeter?
A rectangular sticker has an area of 30 sq cm and its perimeter is 26 cm. what are the​

Answer 1

Answer:

ans. is l=2 cm and b=15 cm

Step-by-step explanation:

A=l×b=30 -(1)

P= 2 (l+b) -(2)

Now from eq 2 , l = 26-2b/2 --(3)

put value of l from eq 3 to eq 1

l × b = 30

26-2b/2 ×b = 30

26b - 2b^2=60

2b^2 -26b + 60=0

2b^2-30b+4b+60=0

2b (b-15) 4 (b-15) =0

(2b+4) (b-15)

b=-2 or 15

dimensions can't be -ve so breadth is 15 cm

and length is 2 cm

l × b = 30

l × 15 =30

so , l=2 cm

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