The length and Breadth of a rectangle is 7 1/2m and 5 1/4m respectively. Find the perimeter.
Please it’s urgent​

2 thoughts on “The length and Breadth of a rectangle is 7 1/2m and 5 1/4m respectively. Find the perimeter.<br />Please it’s urgent​”

1. Answer:

   25.5m

   Step-by-step explanation:

   convert length and breath into into decimal form

   L= 7+1/2= 7+.5 = 7.5m

   B= 5+1/4=5+.25=5.25m

   perimeter= 2(l+b)

   => 2(7.5+2.5)

   => 25.5m

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2. Answer:

   Step-by-step explanation:

   Here, l=(5.7±0.1)cm,b=(3.4±0.2)cm

   Area, A = l×b=5.7×3.4=19.38cm

   2

   =19.0cm

   2

   (rounding off to two significant figures)

   ∴

   A

   △A

   ​

   =±(

   l

   △l

   ​

   +

   b

   △b

   ​

   )

   = ±(

   5.7

   0.1

   ​

   +

   3.4

   0.2

   ​

   )=±(

   5.7×3.4

   0.34+1.14

   ​

   )=±

   19.38

   1.48

   ​

   ⇒△A=±

   19.38

   1.48

   ​

   ×A=±

   19.38

   1.48

   ​

   ×19.38=±1.48

   △A=±1.5 (rounding off to two significant figures);

   Area = (19.0±1.5)cm

   2

   .

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