Suppose that you buy an exercise ball with diameter of 85 cm and your brother buys an exercise ball with diameter of 65 cm. What is the difference between the volume of both balls? What is the difference between the surface area of both balls? Justify your answer and round to the nearest hundredth.

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?