Please help tysm! will mark brainily for whoever answers first and correct ^^ What is the volume of the cylinder below?

A. 98pi units3
B. 784pi units3
C. 112pi units3
D. 196pi units3

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.