Does anybody know this one?

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°