170 cm
Chat with our AI personalities
Regular = all sides equal so all sides of 25 cm. Decagon = 10 sides. So perimeter = 10*25cm = 250 cm.
A decagon has 10 equal sides, so if the perimeter is 120 cm each side must be 12 cm
Perimeter of the square: 17+17+17+17 = 68 cm
The perimeter of a triangle is the sum of its 3 sides.
wouldn't it just be 2cm times 10 so the answer is20cm