Find the volume of this sphere.
Use 3 for TT.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)