What is the circumference of a circle with a radius of 7 feet?

42
3.5
28
14

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.