Abattery company manufactures batteries having life spans that are normally distributed, with a mean of 45 months and a standard deviations of 5 months. find the probability that a battery chosen at random will have each life span. a. 48-50 months b. 45-52 months

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?