Question

The perimeter of a rectangle is 13 cm and its width is 23/4
cm. Find its length

Answer 1

Answer:

hii friend

Step-by-step explanation:

Perimeter of the rectangle is 13 cm. Width of the rectangle is 2 3/4cm. Perimeter of the rectangle=2(l+b). Add the length and breadth and then double it you get the perimeter. Or double the length and double the breadth and add them up you get the perimeter. Now we have breadth and the perimeter. Double the breadth and subtract it from the perimeter you get the doubled length. Divide this doubled length with 2, you get length of the rectangle.

Doubling the breadth=2 (2 3/4) = 2(11/4)=11/2

Subtract this doubled breadth from perimeter, we get doubled length.

Doubled length= 13–11/2 = 26/2 -11/2 = 15/2

Now half of 15/2 is the length of the rectangle. =(15/2)/2 = 15/4 = 3 3/4.

Answer 2

Answer:

The answer will be 3/4cm which is the length of the rectangle......

Step-by-step explanation:

we know,

perimeter=2*(l+b)

here,

13cm is the perimeter and width=23/4 cm

So,

13=2*(l+23/4)

13=(2*l) +(2*23/4)

13=2l +11.5

13--11.5=2l

1.5=2l

1.5/2=l

15/10*2=l

15/20=l

3/4=l

therefore, length=3/4 cm

length of the rectangle is 3/4cm with perimeter=13cm and width=23.4cm.....

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