Answer:
ask brainly. someone on there always knows.
Step-by-step explanation:
The answer of the question is 22.627416998
hope I helped...
Basically here all you want to do it substitute the values x=1 and x=2 for the given function. Use your slope formula
.
Do same for x=3 and x=4
You next divide plug in values in to this expression:

Maybe use a ruler To find the area and add them together to fin the volume.
Answer:
Given: In triangle ABC , AD is drawn perpendicular to BC.
Since AD is drawn perpendicular to BC, it creates two right triangles: ADB and ADC.
Prove that: 
Pythagoras triangle for right angle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs.
In a right angle triangle ADB;
[By Pythagoras theorem]
or
.......[1]
Now, in right angle triangle ADC;
[By Pythagoras theorem]
or we can write this as;
......[2]
Substituting the equation [1] in [2] we get;
hence proved!