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area = 1/2 base x height
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∙ 14y ago
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How do you find aras of triangles and parallelograms?
Triangles you use : (base x perpendicular height) divided by 2. Parallelogram: you need to find the area of one of the side triangles, then double it (because there's two of them). Then find the area of the square in the middle, and add this to the area of the two triangles.
How do you find an area of a RHOMBOID?
Find the area of the square and two triangles that compose the rhomboid.
How can you find the area of a polygon that is not one for which you know an area formula?
Divide the polygon into triangles. Calculate the areas of the triangles and then sum these.
How can you use triangles to find the area of the hexagon?
the edges
How do you find the lateral area of a pyrimid?
Add the areas of the 4 triangles on the side of the pyramids As the 4 triangles are the same, just find the area of one of them and multiply by 4
What is the formula for a triangular pyramid in surface area?
A=1/2bh The area of a triangle is 1/2bh. If the base of it is a triangle and all 4 of the triangles aren't the same, then you have to find the area of the base triangle and then the three other triangles (which should all have the same area). If all four of the triangles have the same area, then just find the area of one of the triangles and multiply that by four. A triangular pyramid that has four equal triangles is also called a tetrahedron.
What strategies are there to find the surface area of three-dimensional shapes made from rectangles and triangles?
Find the areas of the rectangles and triangles. Add them together.
How do you find surface area of an equilateral triangles?
Area = 0.5*base*perpendicular height
How do you find area of paths?
Break the area into squares, rectangles and triangles and add together.
How do you find the surface area of a hexagon?
The surface area of a hexagon is the same as its area. You will normally need to split the hexagon into triangles, find their area and sum these.
How do you find the area of an icosahedron?
You would need to divide it into triangles, find the area of each triangle and sum these areas together.
Find the area of an isosceles triangle?
For all triangles: area = 1/2 * base * height
