The volume v of a cylinder is V equals pir²H, where are is the radius of the cylinder and H is the height using rounding to the nearest whole number which of the following is an estimate of the volume of a cylinder with a radius of 3.75 in and a height of 6.21 inches.

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?