A regular pentagon has side length 12 cm. The perimeter of the pentagon is 60 cm and the area is 247.7 cm2. A second pentagon has side lengths equal to 18 cm. Find the perimeter of the second pentagon.
A. 40 cm
B. 65 cm
C. 90 cm
D.49 cm

Question

A regular pentagon has side length 12 cm. The perimeter of the pentagon is 60 cm and the area is 247.7 cm2. A second pentagon has side lengths equal to 18 cm. Find the perimeter of the second pentagon. 
A. 40 cm 
B. 65 cm 
C. 90 cm 
D.49 cm

ja1 · Answer

Simple, how do you calculate perimeter?

anonymous · Answer

add up all the sides

ja1 · Answer

Exactly! So how many sides does a pentagon have?

anonymous · Answer

5

ja1 · Answer

Perfect! So if the first pentagon had 5 sides and each side was 12 the perimeter is 60 because:

12 + 12 + 12 + 12 + 12 = 60

ja1 · Answer

So if the new pentagon has 18 in long sides what is the perimeter ?

ja1 · Answer

cm*

anonymous · Answer

90 cm

ja1 · Answer

You see? I gave you no answers at all, that was all on you :)

anonymous · Answer

thanks

ja1 · Answer

No problem! Can I have a medal for helping :3

anonymous · Answer

yea how do i give you a medal

ja1 · Answer

Click the blue "Best Response"

ja1 · Answer

Haha you got it :) if you need any more help mesage me or any other user with an "A" and they will be happy to assist you :)

anonymous · Answer

i gave u  medal and thanks again

ja1 · Answer

No problem! Glad to help :)