How to find the surface area of a composite figure?

Like a cube, a sphere, or a tetrahedron, a polyhedron has flat faces, just as a square has four sides. The faces of a polyhedron can be triangles, quadrilaterals, pentagons, hexagons, or any shape you can imagine. The surface area is the sum of the areas of each flat face. The surface area of a polyhedron is the sum of the areas of its faces multiplied by its number of sides. The surface area

How to find the surface area of a rectangle with a square?

If you have two squares whose sides have lengths a and b, you can easily find the area of a rectangle formed by them by multiplying the area of each square by its length. The rectangle’s surface area is equal to the sum of these two square areas. In this case, the length of each side of the rectangle is the length of each side of the smaller square, which is a, and the length of each side of the rectangle is the length of each side of the larger square

How to find the surface area of a square with a triangle?

A triangle and a square are two of the most common shapes used to form a complex figure. If you were given two shapes, one a triangle and the other a square, to combine them together to form a larger figure, how could you find the surface area of the new figure? The shape of a square is easy to work with because the sides are all the same length. You can find the area of a square by multiplying each side by its length. By adding together the areas of each triangle

How to find the surface area of a triangle with a rectangle?

Your next task is to find the surface area of the triangle formed by the three sides of the rectangle. If you use a calculator for this, start by entering the base length of the rectangle (which is the length of the rectangle along the base). Next, enter the height of the rectangle. Finally, enter the length of the three sides of the triangle you created by drawing the two diagonals from the upper left-hand corner to the lower right-corner of the rectangle. Finally,

How to find the surface area of a triangle with

A triangle with base $a$, height $b$, and internal angle $c$ has a surface area of $ab\cdot \sin c$. This works for any triangle, whether or not it’s right-angled. A triangle with right-angled corners has an area of $a(b/2)\cdot c$, which is the area of a square with side length $b$.