Jay can paint a house in 5 hours and david can paint a house in 3 hours. how long will it take them to paint a house if they work together

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

How do i do this activity, is appreciated

Ineed with number 6 , explain how to get 1978