What is the surface area of the figures below?
Thank you!
Answers
Answer:
Triangular Prism =1728 cm²
Cylinder≈791.68
Step-by-step explanation:
Triangular Prism
First deconstruct the shapes. For the triangular prism, it is one 20x32 rectangle, one 12x32 rectangle, one 16x32 triangle, and two 16x12 triangles. Find the area of these separately.
The formula for rectangles is height x base, and for triangles its height×base / 2.
Add the area of each of the shape, and you have your surface area!
Cylinder
Pretty much the same as the triangular prism, except different shapes of course! You can deconstruct it into one 11 x 43.98 (ish) rectangle, and 2 circles with a radius of 7. Once again, find the formulas of the shapes and add.
The formula for a rectangle is base x height, and the circle is πr²
Hope this helps! Sorry if it was long.