The area of the circle is 40 yards find the area of the circle. Use 3.14 for π.

The circumference of a circle is 5 pi cm. what is the area of the circle?

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

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?