Leah sells rare gemstone necklaces at the county fair. She used a frequency chart to record the types of necklaces she sold during the fair. Gemstone necklaces sold Gemstone Frequency sapphire ? amber 17 ruby 18 amethyst 24 topaz 12 Leah sold 1 3 as many sapphire necklaces as ruby necklaces. How many sapphire necklaces did she sell?

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?