Question

Find the perimeter of:-
i) a regular pentagon of side 8 cm.
ii) a regular octagon of side 4.5 cm.
iii) a regular decagon of side 3.6 cm.




Question:-
The cost of putting a fence around a square field at Ruppe 35 per meter is Rupee 4480. Find the length of each side of the field.

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Answer 1

Answer:

I hope it will be help full for you

Answer 2

Step-by-step explanation:

i) perimeter of pentagon = 8× 5

= 40cm

ii) perimeter of octagon= 4.5×8 = 36cm

iii) perimeter of decagon= 3.6× 10 = 36cm

perimeter of field = total cost/ cost per meter

= 4480/35

= 128cm

perimeter of square = 4× side

128 = 4× side

side = 128/4

side = 32cm

hence each side of field is 32cm in length.

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