Question

3. The length and the breadth of a rectangle are 12
4/5 m and 9 1/2 m respectively. Find its perimeter.
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Answer 1

Answer:

SolutioN :

We are given length and breadth is mixed fraction First we have to convert them in fraction .

✯ Length = (12* 5 + 4)/5

⇒Length = (60 + 4)/5

⇒Length = 64/5

Length of Rectangle is 64/5 m

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✯ Breadth = (9*2 + 1)/2

⇒Breadth = (18 + 1)=2

⇒Breadth = 19/2

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Now, use formula for Perimeter of Rectangle :

➠ Perimeter = 2(Length + Breadth)

⇒Perimeter = 2(64/5 + 19/2)

⇒Perimeter = 128/5 + 38/2

⇒Perimeter = 128/5 + 19

⇒Perimeter = [128 + 19(5)]/5

⇒Perimeter = (128 + 95)/5

⇒Perimeter = 223/5

➠ Perimeter of rectangle is 223/5 m

Answer 2

Answer:

length of rectangle is = 12 1/4 = 49/4

breath of rectangle is = 9 1/2 = 19/2

the perimeter is 2×(19 /2 + 49 /2)

= 2×87/4

= 87/2