Question

the perimeter of a rectangle is 82cm and its area is 400cm^.find our breadth of a rectangle
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Answer 1

Answer:

16,25

Step-by-step explanation:

Perimeter of rectangle=82

area of rectangle=400

i.e

2(l+b)=82 equation 1

l x b=400 equation 2

from equation 2

l=400/b

putting value of l in equation 1

2(l+b)=82

l+b=41

400/b +b^2=41

400+b^2=41b

b^2-41b+400=0

b^2-25b-16b+400=0

b(b-25)-16(b-25)=0

(b-25) (b-16)=0

b=25,16

putting value of b in equation 2

l x 25=400

l=16

l x 16=400

l=25

hence the value of breadth of the rectangle are 16,25.

hope it helps you

Answer 2

Step-by-step explanation:

its yur solution dear....