Question

the area of a rectangular is 20metre square and it's length is 8 m. find the perimeter

pls give step by step
explanation

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Answer 1

Answer:

suppose the breath of the rectangle is b

now ,

area of rect.= l×b

20=8×b

20/8=b

2.5=b

now,

perimeter of rectangle=2(l+b)

=2(8+2.5)

=2×10.5

=21 _____ans✔️✔️✔️

Answer 2

Answer:

perimeter of rectangle=21m

Step-by-step explanation:

area =20m^2

length, l =8m

we know that

area = length×breadth

20=8×breadth

breadth,b =20/8

breadth=2.5m

perimeter of rectangle=2(l+b)

perimeter of rectangle=2(8+2.5)

perimeter of rectangle=2(10.5)

perimeter of rectangle=21m