PLS HELP ILL MARK YOU BRAINLIEST Volume of Solids that contain holes CALCULUS
Directions: V =[f(x)]2 −[g(x)]2 dx [(top)2 −(bottom)2]
a
1) x-axisgiven f(x)= 25−x2 and g(x)=3.
2) Find the volume of the solid formed when revolving the region about the x-axisgiven f(x)= 20−x2 and g(x)=4.

Anyone know? will mark brainliest if correct!

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)