Please help i need all of them
just give me the answer choice for them

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?