Surface Area of Pyramids Practice Complete this assessment to review what you've learned. It will not count toward your Find the surface area of a rectangular pyramid with these measurements l = 8cm; w = 4 cm and h = 2cm Express your answer as a decimal rounded to the nearest hundredth 1 point)
To find the surface area of a rectangular pyramid, we need to calculate the area of the base and the area of the four triangular faces.
The area of the base can be found by multiplying the length and width of the base: 8cm * 4cm = 32cm^2.
To find the area of each triangular face, we can use the formula: (base * height) / 2.
For the first triangular face, the base is 8cm and the height is 2cm, so the area is (8cm * 2cm) / 2 = 16cm^2.
For the second triangular face, the base is 4cm and the height is 2cm, so the area is (4cm * 2cm) / 2 = 4cm^2.
For the third triangular face, the base is 8cm and the height is 2cm, so the area is (8cm * 2cm) / 2 = 16cm^2.
For the fourth triangular face, the base is 4cm and the height is 2cm, so the area is (4cm * 2cm) / 2 = 4cm^2.
Now, we can find the total surface area by adding the areas of the base and the four triangular faces: 32cm^2 + 16cm^2 + 4cm^2 + 16cm^2 + 4cm^2 = 72cm^2.
So, the surface area of the rectangular pyramid is 72 square cm.