Henrique drew and labeled the net shown. He also labeled the areas of the left and right triangular sides.
2 answers:
Answer:
Step-by-step explanation:
You need to remember the following:
1. The area of a rectangle can be calculated with the following formula:
Where "l" is the length and "w" is the width.
2. The area of a triangle can be calculated with the following formula:
Where "b" is the base and "h" is the height.
Use those formulas to find the area of each face.
<u> Area of the rectangle</u>
<u>Area of two triangles</u>
There are two equal triangles. Each one has a base of 10 inches and a height of 5 inches. Then, their areas are equal:
The areas of the other two triangles (which are equal) are:
Adding the areas of the faces, you get that the surface area of the rectangular pyramid is:
You might be interested in
Answer: All three of the altitudes lie entirely outside the triangle.
Step-by-step explanation:
The orthocenter is the center of the triangle formed by creating all the altitudes of each side.
The altitude of a triangle is formed by creating a line from each vertex that is perpendicular to the opposite side.
In acute traingle , the orthocenter lies inside it.
In right angled triangle, the orthocenter lies on the triangle.
In obtuse triangle , the orthocenter lies outside the triangle because all the three altitudes meet outside .
So, the best explains why the orthocenter of an obtuse triangle is outside the triangle : All three of the altitudes lie entirely outside the triangle.
