A circle’s circumference is 600 m. What is a good approximation of the circle’s area? 300, 3000 or 30,000 meters squared

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?