AP®︎ Calculus AB: Topic 8.8 Practice Test

Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 8.8 of AP Calculus AB – Volumes with Cross Sections: Triangles and Semicircles.


Questions List

Topic 8.8

Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12

Question 1 Easy

Let RR be the region bounded by y=4−x2y=4-x^2 and the x-axis. The region RR is the base of a solid whose cross sections perpendicular to the x-axis are equilateral triangles with one side in RR.

What is the area of the cross section at x=1x=1?

A92\frac{9}{2}
B334\frac{3\sqrt{3}}{4}
C932\frac{9\sqrt{3}}{2}
D934\frac{9\sqrt{3}}{4}

What You’re Being Tested On:

Explore the learning objectives taken directly from the College Board’s AP® Calculus AB Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Topic 8.8: Volumes with Cross Sections: Triangles and Semicircles

Learning Objective: CHA-5.B

Calculate volumes of solids with known cross sections using definite integrals.

Essential Knowledge: CHA-5.B.2

Volumes of solids with triangular cross sections can be found using definite integrals and the area formulas for these shapes.

Essential Knowledge: CHA-5.B.3

Volumes of solids with semicircular and other geometrically defined cross sections can be found using definite integrals and the area formulas for these shapes. Illustrative examples: The volume of a funnel whose cross sections are circles can be found using the area formula for a circle and definite integrals (see 2016 AB Exam FRQ #5(b)). The volume of a solid whose cross sectional area is defined using a function can be found using the known area function and a definite integral (see 2009 AB Exam FRQ #4(c)).