Computing Volume from Cross-Sectional Area

In summary, the problem requires finding the volume of a house attic with rectangular and triangular cross sections. The dimensions of the rectangle are 30 feet by 60 feet and the triangles have a base of 30 feet and a height of 10 feet. The solution involves slicing the attic into one-foot thick triangular slabs and finding the volume of each slab.
  • #1
pilotsjs89
1
0

Homework Statement


A house attic has rectangular cross sections parallel to the ground and triangular cross sections perpendicular to the ground. The rectangle is 30 feet by 60 feet at the bottom of the attic and the triangles have base 30 feet and height 10 feet. Compute the volume of the attic.


Homework Equations





The Attempt at a Solution



I know how to solve this once it is set up as an integral, but I am having trouble setting up the integral itself.
 
Physics news on Phys.org
  • #2
An integral is overkill. Think of slicing the attic into triangular slabs, each one foot thick. What is the volume of each slab? How many slabs are there?
 

What is cross-sectional area?

Cross-sectional area is the area of a two-dimensional shape that is created when a three-dimensional object is cut by a plane. It is typically measured in square units, such as square meters or square inches.

What is volume?

Volume is a measure of the amount of space occupied by a three-dimensional object. It is typically measured in cubic units, such as cubic meters or cubic inches.

How do you calculate volume from cross-sectional area?

To calculate volume from cross-sectional area, you need to know the cross-sectional area and the length of the object. Then, you multiply the cross-sectional area by the length to get the volume. For example, if the cross-sectional area is 10 square meters and the length is 5 meters, the volume would be 50 cubic meters.

What are some common shapes used to calculate volume from cross-sectional area?

Some common shapes used to calculate volume from cross-sectional area include cylinders, prisms, pyramids, and cones. Each of these shapes has a specific formula for calculating volume from cross-sectional area.

Why is calculating volume from cross-sectional area important?

Calculating volume from cross-sectional area is important in various fields, such as engineering, construction, and manufacturing. It allows us to determine the amount of space an object takes up, which is necessary for designing and building structures and objects that are functional and efficient.

Similar threads

  • Calculus and Beyond Homework Help
Replies
4
Views
761
  • Calculus and Beyond Homework Help
Replies
8
Views
1K
  • Calculus and Beyond Homework Help
Replies
14
Views
3K
  • Calculus and Beyond Homework Help
Replies
3
Views
1K
Replies
2
Views
1K
  • Calculus and Beyond Homework Help
Replies
2
Views
3K
  • Calculus and Beyond Homework Help
Replies
1
Views
6K
  • Calculus and Beyond Homework Help
Replies
3
Views
1K
  • Calculus and Beyond Homework Help
Replies
30
Views
3K
  • High Energy, Nuclear, Particle Physics
Replies
2
Views
2K
Back
Top