More lessons for Grades 7 and 8 Math
More Geometry Lessons
Videos, worksheets, stories and songs to help Grade 7 and Grade 8 students learn how to find the surface area of composite figures that consist of prisms, cones, spheres, hemispheres, and pyramids.
Surface Area of Composite Figures (Prisms)
Learn to compute the surface area of composite figures. Triangular prism and rectangular prism.
Volume and Surface Area of Composite Figures (Spheres & Cones)
Learn to calculate the volume and surface area of composite figures.
How to find surface area of composite objects?
Surface Areas of Composite Figures (Pyramids & Cones)
Learn to calculate surface area of composite figures.
Surface Area of Composite Shapes
We take a look at how to find the overlapped area of composite shapes. Rectangular Prisms.
Volume and surface area composite figures (cylinder and hemisphere, cone, cylinder and hemisphere)
Surface Areas of Pyramids and Cones - Applications
Learn to apply surface areas of pyramids and cones to real life problems.
1. A cone-shaped roof has a diameter of 12 feet and a height of 8 feet. If the roofing material comes in 120 square-foot rolls, how many rolls will be needed to cover this roof?
2. The height of a pyramid is 216 feet and the side of the (square) base measures 346 feet. Find the lateral surface area.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.