Answer ASAP please I need help

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

1. what is the measure of ∠abc? what is the measure of ∠abd?

When turned about its axis of rotation, which shape could have created this three-dimensional object?