Question

Q.11 the marked one.

Answer 1

Answer:

The number of sides (n) = 50

Step-by-step explanation:

convert the side from mm to cm i.e 25mm to 0.25cm (∵ 1cm = 10mm)

we know that, perimeter is sum of length of all the sides "l" (l+l+l+l+....)

⇒ ntimes l (nl) = 12.5cm

but, l= 0.25cm

∴ n(0.25) = 12.5

⇒ n= 50

Answer 2

Answer:

Step-by-step explanation: