Question

What will be the perimeter of Rectangle whose length is 20 centimetre and the Area is 100 centimetre square ?​

Answer 1

Answer:

60

Step-by-step explanation:

area =1/2 ×l×b

100=1/2×20×b

b=10

then perimeter is sum of the sides

so,perimeter p =2( l+b)

=60

Answer 2

Answer:

50 cm

Step-by-step explanation:

given: length = 20cm

          area = 100 cm²

To find: perimeter

Area = l×b = 100

        20×b = 100

b= 100/20

= 5

∴breadth=5

perimeter= 2(l+b)

               = 2(20+5)

               = 2×25

               = 50 cm

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