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:

Answer:81/100
Step-by-step explanation:
0.81
0.0 tenths
0.00 hunderts
Answer:
Just to be on the safe side the first #1 is 31.5 and the second #1 is 57.82